Thursday, 29 September – 1 st Quarter Regular Sessions (08:30 – 10:15)
Lomond Auditorium
Th1.2 – Advanced Modulation Formats I
Chair: Rene-Jean Essiambre, Lucent, United States
Th1.2.1 08:30 – 09:00
Invited – Advanced Modulation Formats for High-Capacity Optical Transport Network
Y Miyamoto, NTT Network Innovation Laboratories, Japan
Design and performance advantage of advanced modulation formats are reviewed for high-capacity optical transport network, that consists of various optical transparent ROADM / OXC system as well as DWDM point -to-point systems.
Th1.2.2 09:00 – 09:15
Experimental Comparison of 40 Gb/s RZ-, CSRZ-, and NRZ-DPSK Modulation Formats over Non Slope-Matched Fibres
J-X Cai , M Nissov, H Li, C R Davidson , W Anderson , L Liu , D Foursa , A N Pilipetskii , N S Bergano , Tyco Telecommunications , United States
Various DPSK modulation formats were experimentally compared at 40 Gb/s using non slope-matched fibre spans. All formats benefited from dispersion slope compensation. For co-polarized channels on 100 GHz spacing CSRZ-DPSK worked best.
Th1.2.3 09:15 – 09:30
Optical Minimum-Shift Keying Modulator for High Spectral Efficiency WDM Systems
J Mo , Y J Wen, S Takahashi, Y Wang, C Lu Institute for Infocomm Research , Singapore , Y Dong , Beijing Jiao Tong University , China
We propose a novel optical minimum-shift keying (MSK) transmitter configuration for high-speed and high spectral efficiency WDM systems. 10 Gb/s optical MSK data is successfully generated using the proposed configuration for the first time.
Th1.2.4 09:30 – 09:45
A Cost-Effective Phase-Modulation-Enhanced Duobinary Modulation to Improve SPM Tolerance Using Only One Mach-Zehnder Modulator
Y C Lu , J Chen, W R Peng, M F Huang, C C Wei, S Chi, National Chiao-Tung University , Taiwan , K M Feng , P C Yeh, T Y Huang, National Tsing-Hua University , Taiwan ,
We demonstrated a cost-effective phase-modulation-enhanced duobinary modulation scheme to improve the SPM tolerance using only one modulator. After 230 km of transmission, compared with no phase modulation, we observed a 12 dB sensitivity improvement.
Th1.2.5 09:45 – 10:00
OOK/FSK WDM System Using External Optical FSK Modulation
T Fujita , S Oikawa, S Mori, K Higuma, J Ichikawa, Sumitomo Osaka Cement Co., Ltd. , Japan , T Kawanishi , T Sakamoto, M Izutsu National Institute of Information and Communications Technology , Japan
We demonstrated OOK/FSK simultaneous modulation in a WDM system, where optical labels for payloads in OOK signals can be in FSK format. 1Gbps FSK signal was added to 4x10Gbps OOK signals, by an FSK modulator. We demonstrated OOK/FSK simultaneous modulation in a WDM system, where optical labels for payloads in OOK signals can be in FSK format. 1Gbps FSK signal was added to 4x10Gbps OOK signals, by an FSK modulator.
Th1.2.6 10:00 – 10:15
40 Gbit/s OSSB-NRZ Transmitter for High Capacity Systems
D Fonseca , Siemens Portugal & Instituto Superior Tecnico , Portugal , A Cartaxo , Instituto Superior Tecnico , Portugal , P Monteiro, Siemens Portugal & Universidade de Aveiro, Portugal, R Sousa , A Ferreira, M Violas, Universidade de Aveiro , Portugal , T Silveira , Siemens Portugal & Universidade de Aveiro , Portugal
A 40 Gbit/s OSSB-NRZ experimental transmitter, using electrical processing to suppress one sideband, is presented. The dispersion tolerance is increased by a factor of 5 using OSSB-NRZ and electrical dispersion compensation, compared to conventional NRZ.
Argyll Suite
Th1.3 – Subsystems Approaches
Chair: Christophe Peucheret , COM, Technical University of Denmark, Denmark
Th1.3.1 08:30 – 08:45
Asynchronous Burst Optical Label Swapper based on an Optically Clocked Transistor Array
R Urata , R Takahashi , T Nakahara , H Suzuki , NTT Photonics Laboratories, NTT Corporation , Japan
We have fabricated a prototype label swapper module by integrating an optically-clocked-transistor-array InP OEIC with CMOS. The prototype achieves fully-functional label swapping for 10-Gb/s, 16-bit asynchronous burst optical labels while minimizing size, power, and cost.
Th1.3.2 08:45 – 09:00
Multi-state Optical Memory Based on Serially Interconnected Lasers
S Zhang , Y Liu, M T Hill, G D Khoe, H J S Dorren, Eindhoven University of Technology , The Netherlands , D Owens , University of Technology , The Netherlands & Athens Information Technology (AIT) Center , Greece , D Lenstra , Eindhoven University of Technology , The Netherlands & Vrije Universiteit , The Netherlands, A Tzanakaki , Athens Information Technology (AIT) Center , Greece
A five-state optical flip-flop memory based on serially interconnected lasers is experimentally demonstrated. The contrast ratio between different states is over 30 dB. More state operation can be realized by connecting more lasers.
Th1.3.3 09:00 – 09:15
Continuously-Tunable Dispersionless 44-ns All Optical Delay Element Using a Two-Pump PPLN, DCF, and a Dispersion Compensator
Y Wang , C Yu , L Yan , A E Willner , University of Southern California , United States , R Roussev , C Langrock , M M Fejer , Stanford University , United States
We demonstrate an optically controlled, continuously-tunable dispersionless optical delay element using a two-pump PPLN waveguide, dispersion compensated fiber and a dispersion compensator. A Continuous optical delay up to 44-ns is shown for 10-Gb/s NRZ applications.
Th1.3.4 09:15 – 09:30
Photonic Analogue to Digital Conversion System Using Broadband Mode Locked Laser with 20GHz Bandwidth
P Jiang , Y Chai, I White , R Penty , Cambridge University , United Kingdom, J Heaton, A Kuver, S Clements , Filtronic Plc , United Kingdom , C G Leburn , A McWilliam , A Lagatsky , C Brown, W Sibbett , St. Andrews University , United Kingdom
A photonic ADC system with 20GHz bandwidth and 20dB signal-to-noise ratio is demonstrated, using a broadband mode locked laser and dispersive fibre to form a continuous waveform with time-wavelength mapping, and an AWG to channelise.
Th1.3.5 09:30 – 09:45
80 Gb/s Optimised Pulse Source using a Gain-Switched Laser Diode in Conjunction with a Nonlinearly Chirped Grating
A M Clarke , M Rensing, P M Anandarajah , L P Barry, RINCE, Dublin City University , Ireland, D Reid , J D Harvey, Auckland University , New Zealand , G Edvell , Redfern Optical Components , Australia
The authors demonstrate near transform limited 3.5 ps pulse generation with pedestal suppression around 35 dB suitable for use in 80-Gb/s systems. The novel technology is based on an externally injected gain-switched laser in conjunction with a nonlinearly chirped grating.
Th1.3.6 09:45 – 10:00
Optical Phase-locking of 160 GHz Optical Beat to 40 GHz Optical Pulse Train Using a Three-electrode DFB-LD and a Si Avalanche Photodiode
S Takasaka , PRESTO, Japan Science and Technology Agency & Fitel Photonics Laboratory, the Furukawa Electric Co., Ltd., Japan, Y Ozeki , PRESTO Japan Science and Technology Agency , Japan , K Igarashi , S Namiki, Fitel Photonics Laboratory, the Furukawa Electric Co., Japan,
We successfully phase-locked 160 GHz optical beat to 40 GHz optical pulse train with RMS timing jitter 291 fs, using a three-electrode DFB-LD as optical VCO and a Si-APD as optical phase detector.
Th1.3.7 10:00 – 10:15
43 Gbit/s Bit Error Rate Assessment of a Simple All Optical Clock Recovery Scheme
V Roncin , J C Simon, Laboratoire d'Optronique, France, B Le-Guyader , S Lobo, B Clouet, PERSYST platform , France
We report for the first time on the assessment of a simple clock recovery scheme based on optical filtering. BER measurements show only 1 dB penalty as compared to a fully optoelectronic block.
Forth Room
Th1.4 – Metro and Access Networks
Chair: Eugenio Iannone , Pirelli Labs and Pirelli Telecom Systems, Italy
Th1.4.1 08:30 – 08:45
Economic Study of Transport Methods for Ethernet Services in the Metropolitan Network
S Thiagarajan , L Blair , R Ranganathan, J Berthold , Ciena Corporation , United States
Two popular metro network architectures are compared using a hypothetical, representative metro network model. Costs of provisioning near-term and long-term traffic are analyzed. Oversubscription gains due to statistical multiplexing of packet traffic are measured.
Th1.4.2 08:45 – 09:00
Cost-Effective Transmission Concept for LAN/MAN/SAN Applications
J P Turkiewicz , M T Hill , G D Khoe, H de Waardt , COBRA Research Institute, Eindhoven University of Technology , The Netherlands
We demonstrate error-free 4 times 10 Gbit/s 1310 nm DWDM simplified-design transmission over 200 km of standard single mode fibre without any dispersion compensation using SOAs.
Th1.4.3 09:00 – 09:15
Extension of the Optical Switching Architecture to Implement the Moveable Cell Concept
B Lannoo , D Colle , M Pickavet , P Demeester , Ghent University – IBBT - IMEC , Belgium
To limit the numerous handovers while providing high bandwidth services to train passengers, we proposed the moveable cell concept. In this paper, we extend our switching architecture to realise this concept in more general situations.
Th1.4.4 09:15 – 09:30
Simplified Multiplexing Scheme for Wavelength-Interleaved DWDM Millimetre-Wave Fibre-Radio Systems
M Bakaul , C Lim, D Novak, R Waterhouse, The University of Melbourne , Australia , A Nirmalathas , Victoria Research Laboratory, The University of Melbourne , Australia
A simplified scheme for the multiplexing of multiple wavelength interleaved millimetre-wave (37.5 GHz-band) fibre-radio channels spaced at 25 GHz is proposed and demonstrated. The scheme which is based on a AWG multiplexer can provide improved link performance by reducing the carrier-to-sideband ratio (CSR).
Th1.4.5 09:30 – 09:45
Analysis of Beat Noise in OCDMA System with Saddle Point Approximation Method
T Pu , Tsinghua University & Institute of Communication Engineering, China, H Zhang , Y Guo, Tsinghua University , China, M Xu , Shenzhen University , China, Y Li , Institute of Communication Engineering , China
With the progress of phase coding technologies, beat noise becomes the main limitation of an OCDMA system. Accurate saddle-point approximation method is introduced to evaluate the moment generation functions of beat noise and multi-access interference simultaneously.
Th1.4.6 09:45 – 10:00
An Error-Free 100 Gb/s Time-Slotted SPECTS O-CDMA Network Testbed
W Cong , R P Scott , C Yang , V J Hernandez , N K Fontaine , J P Heritage , B H Kolner , S J B Yoo , University of California , United States
A time-slotted SPECTS O-CDMA network testbed incorporating a NOLM time gate and a nonlinear fibre-based thresholder is demonstrated with error-free performance for up to 10 users distributed in two time slots at 10 Gb/s/user.
Th1.4.7 10:00 – 10:15
Analytical Model of Variable Quality of Service to Increase Number of Users in an O-CDMA Network
P Saghari , R Gholizaeh , R Omrani, A E Willner, P V Kumar, University of Southern California , United States , P Kamath , J A Bannister, J D Touch, Information Science Institute , United States
We evaluate the performance of variable quality-of-service (QoS) using variable weight coding in an O-CDMA network. By reserving high-weight codes only for high-QoS (high-performance) users, the total users supported by the network can be quadrupled.
Alsh Room
Th1.5 – Wavelength-Domain Signal Processing
Chair: Masayuki Izutsu , NICT, Japan
Th1.5.1 08:30 – 08:45
Dispersion Compensation Experiments of 40 Gbit/s NRZ Signal Using Arrayed-Waveguide Grating Based Dispersion Compensator
T Suzuki , K Masuda , H Tsuda , Keio University , Japan , R Inohara , H Takahashi , KDDI R&D Laboratories Inc. , Japan , H Ishikawa , Y Abe , S Kashimura , H Uetsuka , Hitachi Cable Ltd. , Japan
Dispersion compensation of 40 Gbit/s, NRZ signal is successfully demonstrated. The arrayed-waveguide grating based dispersion compensator has the dispersion of 123 ps/nm, the bandwidth of 70 GHz and the insertion loss of 7.5 dB.
Th1.5.2 08:45 – 09:00
Proposal and Demonstration of 40-Gbit/s Simple and Colorless Tunable Dispersion Compensator using Angled Etalon with Multiple Reflections
T Sugawara , Central Research Laboratory, Hitachi, Ltd. , Japan , S Makio , Advanced Electronics Research Laboratory, Hitachi Metals, Ltd. , Jap an
We proposed and demonstrated a simple configuration, high performance tunable dispersion compensator using angled etalon with multiple reflections. The tunable range of ±250 ps/nm with a 100-GHz free-spectral-range and 40-Gbit/s NRZ transmissions were shown.
Th1.5.3 09:00 – 09:15
Variable Dispersion Compensator using a VIPA with an Extended Bandwidth
Y Yamauchi , H Furukawa , Y Kubota , Fujitsu Limited , Japan , H Sonoda , Fujitsu Network Technologies , Japan
We achieved variable dispersion compensator using a VIPA with a wide bandwidth by employing a high refractive index material to the plate. The channel is 100 GHz, and the extended bandwidth is sufficient for 40-Gbit/s signals.
Th1.5.4 09:15 – 09:30
Fast Gain Tilt Compensator Employing LiNbO 3 Polarization Transformer
T H Hatano , D Y Yoon , K M Mizuno , The Furukawa Electric Co., Ltd. , Japan
Fast gain tilt compensator using LiNbO 3 polarization transformer has been developed in order to compensate gain tilt in EDFA. It is confirmed that the response time of 0.45 microsecond and good linearity of tilt compensation.
Th1.5.5 09:30 – 09:45
Analog and Digital Optical Pulse Synthesizers using Arrayed-Waveguide Gratings for Tbit/s Photonic Signal Processing
H Tsuda , Keio University , Japan, T Kurokawa , Tokyo University of Agriculture & Technology , Japan
Analog and digital optical pulse synthesizers using high-resolution arrayed-waveguide gratings are developed. Several photonic signal processing experiments including dispersion compensation, arbitrary waveform pulse generation, and waveform shaping are successfully demonstrated.
Th1.5.6 09:45 – 10:00
Athermal Demodulator for 42.7-Gb/s DPSK Signals
J Y C Hsieh , C Ai, V Chien , Optoplex Corporation , United States, X. Liu, A H Gnauck, X. Wei , Bell Laboratories, Lucent Technologies , United States
We report an athermal optical-delay-interferometer capable of demodulating any OC-768 DPSK signal on the ITU 50-GHz-grid over the C+L band. Receiver sensitivity of –35.5 dBm is achieved for a 42.7-Gb/s non-return-to-zero DPSK signal.
Th1.5.7 10:00 – 10:15
Air-core Resonator with Widely Tunable Hollow Waveguide Bragg Reflectors
Y Sakurai , A Matsutani , T Sakaguchi , F Koyama , Tokyo Institute of Technology, Japan
We present a novel air-core resonator consisting of tunable hollow waveguide Bragg reflectors exhibiting a giant tuning range of over 100 nm in Bragg wavelength. The Q-factor for a 1 mm long air-cavity is 104.
Boisdale Room
Th1.6 – Microwave and High Speed Photonic Devices
Chair: Jose Capmany , Universidad Politécnica de Valencia, Spain
Th1.6.1 08:30 - 09:00
Invited - Radiation-Pressure-Driven Micro-Mechanical Oscillator
H Rokhsari, T Carmon, T Kippenberg, K Vahalla, California Institute of Technology (CalTech), United States
A micro-toroidal structure on silicon functions as both an optical and radio-frequency resonator in one, enabling demonstration of a long-postulated effect: radiation pressure driven parametric oscillation. The physics and operation of this device will be reviewed.
Th1.6.2 09:00 – 09:15
High-Performance Low-Cost Online-Reconfigurable Microwave Photonic Transversal Filter
J Capmany , J Mora, D Pastor , B Ortega , Universidad Politecnica de Valencia , Spain
We propose and demonstrate a 40 sample low cost online reconfigurable microwave-photonic transversal filter via RS232 featuring high quality windowing properties. The design is based on a controllable array of Spatial Light Modulators.
Th1.6.3 09:15 – 09:30
High-Q Single-Passband Microwave-Photonic Finite Impulse Response Filter
Jose Capmany, J Mora, Daniel Pastor , Beatri Ortega, Universidad Politecnica De Valencia , Spain
A high quality factor single resonance microwave photonic transversal filter is proposed and experimentally demonstrated which is based on the use of tuned external modulators. A world record Q factor of 237 is reported.
Th1.6.4 09:30 – 09:45
Ultrafast Switching of Intersubband Saturable Absorber in II-VI-based Quantum Well Waveguides
R Akimoto , B Li, T Hasama, National Institute of Advanced Industrial Science and Technology (AIST) , Japan, K Akita, National Institute of Advanced Industrial Science and Technology (AIST) & Science University of Tokyo, Japan
Ultrafast all-optical switch using intersubband absorption saturation in II-VI-based quantum well was developed. Sub-ps optical modulation is achieved at 1.55µm wavelength using a high-mesa waveguide structure.
Th1.6.5 09:45 – 10:00
Cascaded Second Order Nonlinearity Based Tunable Wavelength Conversion of 80 Gb/s RZ Signals
A Nirmalathas , The University of Melbourne , Australia , N Wada , K Awaji , National Institute of Information and Communications Technology , Japan
In this paper, we present the results from a wavelength conversion experiment involving cascaded second-order nonlinearities within a PPLN waveguide to achieve tunable wavelength conversion of 80 Gb/s RZ signals.
Th1.6.6 10:00 – 10:15
High Extinction Ratio Optical Modulator Using Active Intensity Trimmers
T Kawanishi , T Sakamoto , M Tsuchiya , M Izutsu , National Institute of Information and Communications Technology, Japan
We demonstrated high extinction ratio optical intensity switching by an integrated Mach-Zehnder LiNbO 3 modulator, where each arm has a small Mach-Zehnder interferometer for compensation of amplitude mismatching in the arms. The extinction ratio was 50dB.
Thursday, 29 September – 2nd Quarter Regular Sessions (10:45 – 12:30)
Lomond Auditorium
Th2.2 – Advanced Modulation Formats II
Chair: Robert Killey , University College London, United Kingdom
Th2.2.1 10:45 – 11:15
Invited – Spectral Efficiency Limits in DWDM Systems
J M Kahn , Stanford University , United States, K-P Ho , National Taiwan University , Taiwan
Information-theoretic limits to spectral efficiency in dense wavelength-division-multiplexed systems are reviewed. Various modulation techniques (unconstrained, constant-intensity), detection techniques (coherent, direct) and propagation regimes (linear, nonlinear) are considered.
Th2.2.2 11:15 – 11:30
Optical Generation of 43Gbit/s Phase-Shaped Binary Transmission Format from DPSK Signal using 50GHz Periodic Optical Filter
P Brindel , L Pierre , O Leclerc , Alcatel R&I , France, G Ducournau , O Latry , LEMI, Université de Rouen , France
A novel method to optically generate PSBT format at 43Gbit/s is proposed hereafter. Performance have been compared with NRZ format showing reduced OSNR penalty by 0.7 and 1.3dB for 4.10 -3 (FEC limit) and 10 -5 BER, respectively.
Th2.2.3 11:30 – 11:45
Experimental Comparison of Optical Phase Conjugation and DCF Aided DWDM 2x10.7Gbit/s DQPSK Transmission
S L Jansen, D van den Borne , H de Waardt, G-D Khoe, COBRA Institute, Eindhoven University of Technology , The Netherlands , PM Krummrich , Siemens AG, Germany
The performance of DWDM 2x10.7Gbit/s-DQPSK is assessed comparing mid-link optical phase conjugation (OPC) and DCF for dispersion compensation. We report a 44%-increase in transmission distance resulting from nonlinear phase noise reduction by using mid-link OPC.
Th2.2.4 11:45 – 12:00
PMD and CD Sensitivity Enhancement in Directly Modulated Transmission Systems through RZ DM-DPSK
L Christen , I Fazal, Y Wang , L Yan, A E Willner , University of Southern California , United States , M Giltrelli , University of Padova, Italy , L Paraschis , Cisco Systems Inc, United States , S Yao , General Photonics Corporation, United States
We compare PMD and CD tolerances of directly-modulated transmission formats, including directly-modulated RZ-DPSK, RZ-OOK and NRZ-OOK. It is shown that DM-DPSK is more robust than RZ-OOK and NRZ-OOK to both PMD and CD.
Th2.2.5 12:00 – 12:15
Initial Phase Control Method for High-Speed External Modulation in Optical Minimum-Shift Keying Format
T Sakamoto , T Kawanishi , M Izutsu, National Institute of Information and Communications Technology, Japan
We propose a high-speed external modulation method for optical minimum-shift keying (MSK), where initial phase control together with FSK modulation enables externally continuous-phase modulation with arbitrary frequency deviation. 10-Gb/s MSK modulation spectrum was experimentally obtained.
Th2.2.6 12:15 – 12:30
40Gbit/s Versatile LiNbO 3 Lightwave Modulator
T Kawanishi , T Sakamoto, M Izutsu , National Institute of Information and Communications Technology , Japan , K Higuma , T Fujita, S Mori , S Oikawa , J Ichikawa , Sumitomo Osaka Cement , Japan
We propose a high-speed versatile lightwave modulator which can generate on-off-keying, phase-shift-keying and frequency-shift-keying signals. 40Gbit/s optical FSK modulation was demonstrated by using the modulator consisting of four phase modulators, where frequency deviation was 80GHz.
Argyll Suite
Th2.3 – Access Systems and Networks
Chair: Yong Hyub Won , Information & Communications University , Korea
Th2.3.1 10:45 – 11:00
40 Gb/s Uncompensated 8-Channel CWDM System over 30 Km of Non-Zero Dispersion Shifted Fibre
J D Downie , M Sauer , J Hurley , Corning Incorporated , United States
8-channel uncompensated CWDM transmission is demonstrated with 40 and 42.7 Gb/s duobinary channels over up to 30 km of NZ-DSF. We find that standard FEC does not offer increased reach for this system.
Th2.3.2 11:00 – 11:15
Error-Free Operation of Photonic Downconversion for Millimetre-Wave-Band Uplink Radio-on-Fibre Systems Using A Supercontinuum Light Source
T Kuri , National Institute of Information and Communications Tehcnology , Japan , T Nakasyotani , K Kitayama, Osaka University , Japan, H Toda , Doshisha University , Japan
In wavelength-division-multiplexed millimetre-wave-band radio-on-fibre systems using a supercontinuum (SC) light source, we evaluate the phase-noise characteristics of photonic-downconverted signal, where the SC-mode interval frequency is utilized for the local reference, and demonstrate its error-free operation.
Th2.3.3 11:15 – 11:30
Assessment of Economical Interest of Transparent Switching
D Staessens , S Verbrugge , D Colle , M Pickavet , P Demeester , University of Ghent, Belgium , O Audouin , Alcatel CIT , France
This paper evaluates the node cost reduction expected from introducing transparent switching into a pan-European network. The cost reduction is given as a function of the OXC/PXC cost ratio and the Maximum Transparency Length.
Th2.3.4 11:30 – 11:45
Burst-mode Optical Fiber Amplifier for PON Application
K-I Suzuki , Y. Fukada , K. Saito , T. Nakanishi , Y Maeda, NTT Access Network Service Systems Laboratories , Japan
We propose a burst-mode optical amplifier based on a gain-clamped praseodymium-doped fibre amplifier (PDFA) to improve the allowable attenuation range between an OLT and ONUs; the amplifier is transparent to transmission bit-rate and/or transmission protocol.
Th2.3.5 11:45 – 12:00
Bidirectional Amplified WDM-PON using a Single LOA
M S Lee , B-T Lee , B Y Yoon , H S Chung , Electronics and Telecommunications Research Institute , Korea
To increase the coverage distance in access network, a bidirectional amplified WDM-PON with single LOA is demonstrated. We report the margin improvement of 12.8dB for downstream and 11.4dB for upstream channel with low transient response.
Th2.3.6 12:00 – 12:30
Invited - Direct Sequence OCDMA Systems Based on Fibre Grating Technology
D J Richardson , P C Teh, M A F Roelens, B C Thomsen, C Tian, Z Zhang, P Petropoulos, M Ibsen, University of Southampton , United Kingdom
Fibre Bragg grating technology enables all-optical encoding and decoding of short pulses at ultrafast chip rates. Such code sequences can be used to implement both all-optical code division multiple access and packet switched systems operating at Gbit/s data rates.
Forth Room
Th2.4 – Optical Packet Switching III
Chair: Madeleine Glick , Intel, United Kingdom
Th2.4.1 10:45 - 11:00
Experimental Demonstration of Multicast in an Optical-label Switching Router with Mixed Data Rates of 10 Gb/s and 2.5 Gb/s
Z Pan , H Yang , M Funabashi , Z Zhu , S J B Yoo , University of California, United States
This paper experimentally demonstrates multicast packet forwarding in an optical-label switching router with mixed data rates of 10 Gb/s and 2.5 Gb/s. The demonstration employs multi-wavelength conversion in integrated Mach-Zehnder interferometer with semiconductor optical amplifiers.
Th2.4.2 11:00 – 11:15
Dynamic Power Considerations in a Complete 12x12 Optical Packet Switching Network
B A Small , T Kato , K Bergman , Columbia University , United States
The optical power characteristics of a complete 12x12 Data Vortex optical packet switching network are measured and analyzed. Dynamic range and cascaded noise effects are quantified as indicators of network scalability and robustness.
Th2.4.3 11:15 – 11:30
10 Gbps NRZ-DPSK Modulation in SOA-based Optical Packet Switching Networks
O Liboiron-Ladouceur , R Jordan , K Bergman , Columbia University , United States
Differential phase-shift keying transmission in optical packet switching networks can reduce pattern induced distortion incurred in the semiconductor optical amplifier based switching elements, but phase noise becomes the performance limitation of the physical layer network scalability.
Th2.4.4 11:30 – 11:45
Multi-Port Interconnect Architecture for 100Gb/s Optical Packet Routing
T Lin , K A Williams , R V Penty , I H White , Cambridge University , United Kingdom , M Glick , M Dales , D McAuley, Intel Research, United Kingdom
A multi-port interconnect driven by PC-hosts is shown to be extendable for 100Gb/s routing. The 15.2dB power margin available using conventional transceivers will allow at least eight port connections for a single stage switch fabric.
Th2.4.5 11:45 – 12:00
Dynamically Reconfigurable Optical Buffer with Integrated, Simultaneous Wavelength Conversion Capability for Multi-wavelength Packets
Y K Yeo , A Chowdhury , J Yu , G K Chang , Georgia Institute of Technology , United States
For the first time, simultaneous wavelength conversion of multiple optical packets in an optical buffer is demonstrated. The maximum power penalty for the error-free conversion over a 20nm range is 1.3dB.
Th2.4.6 12:00 – 12:15
A Simple and Robust All-Optical Circulating Buffer and Wavelength Converter for Fast Optical Packet Switching Nodes
G Zarris , E Hugues Salas , D Klonidis , R Nejabati , M O'Mahony , University of Essex , United Kingdom
We have experimentally demonstrated a simple and easily upgradeable to high bit rates all-optical wavelength converter and delay buffer with regenerative characteristics. The element can be used in a wavelength selective optical packet switched node.
Th2.4.7 12:15 – 12:30
Performance of TCP over Optical Burst Switching Networks
R Pleich , M de Vega Rodrigo, J Goetz, Siemens AG , Germany
Bursts contain a number of IP packets from several TCP connections. Burst loss therefore impacts all these connections. This paper studies the throughput and delay degradation to be expected by burst loss in OBS networks.
Alsh Room
Th2.5 – Tunable Devices
Chair: Andrew Ward , Bookham, United Kingdom
Th2.5.1 10:45 - 11:15
Invited - Widely Tunable Lasers Based on Photonic Crystals at 1.5 µm
M Kamp, C Ulzhöfer, S Mahnkopf, H Scherer, A Forchel Technische Physik, Germany, G H Duan, Alcatel, France
We present tunable semiconductor lasers based on two coupled photonic crystal waveguides. The devices have threshold currents below 20 mA, output powers above 20 mW and a tuning range of 30 nm.
Th2.5.2 11:15 – 11:45
Invited - Over 50-mW Fibre Coupled Power and 40-nm Tuning Range of an Extremely Compact External Cavity Wavelength Tunable Laser
K Sato , J De Merlier , K Mizutani , S Sudo , S Watanabe , K Tsuruoka , K Naniwae , K Kudo , NEC Corporation , Japan
We experimentally demonstrate very high fibre coupled power of more than 50 mW and 45-dB SMSR with continuous tuning over the full C-band by an external cavity wavelength tunable laser without an intracavity etalon.
Th2.5.3 11:45 – 12:00
Highly Reliable L-band Tunable DFB Laser Array
H Oohashi , H Mawatari , F Ichikawa , K Kasaya , H Ishii , Y Tohmori , NTT Photonics Laboratories , Japan
We have developed a widely tunable DFB laser array (TLA) module with low power consumption. We demonstrate the highly reliable operation of an L-band TLA chip with a 40 mW output power for the first time.
Th2.5.4 12:00 – 12:15
Design and Analysis of DS-DBR Lasers for C- and L-Band, Achieving a Combined Count of Over 200 Consecutive 50GHz Spaced Channels
J P Duck , L Ponnampalam , J Ward , D J Robbins , G Busico , N D Whitbread , D C J Reid , Bookham Technology plc , United Kingdom
Monolithic, C- and L-Band, DS-DBR lasers are presented with equivalent process and performance. Laser pairs can cover over 200 consecutive 50GHz channels with SMSR >45dB and ex-facet power levelled at 16.5dBm.
Th2.5.5 12:15 – 12:30
Wideband Liquid Crystal Tunable Filter
R Shimizu , Y Ooi , S Hashimoto , K Mitarai , A Koyanagi , Y Fujino , Y Tanabe , Asahi Glass Co., Ltd , Japan
We propose a liquid crystal tunable filter (LCTF) with wideband tunability and fine spectral resolution and high temperature stability. The LCTF is a promising tunable wavelength-selective filter in WDM system.
Boisdale Room
Th2.6 – Optical Devices for Modulation
Chair: Yoshio Itaya , NTT, Japan
Th2.6.1 10:45 – 11:15
Invited - Novel Ultrafast Monolithic Optical Gate Integrating a Uni-Traveling-Carrier Photodiode and InP-Based Mach-Zehnder Modulator
T Yoshimatsu , S Kodama , H Ito , NTT Photonics Laboratories, Japan
A novel ultrafast optical gate monolithically integrating a uni-travelling-carrier photodiode and InP-based travelling-wave Mach-Zehnder modulator has been realized. A gate opening time of 5 ps and an on/off ratio of 12 dB have been achieved.
Th2.6.2 11:15 – 11:30
Compact, High Power, MQW InP Mach-Zehnder Transmitters with Full-band Tunability for 10 Gb/s DWDM
R A Griffin , B Pugh , J Fraser , G Busico , C Edge , T Simmons Bookham , United Kingdom , I B Betty , K Anderson , Bookham , Canada
A full-band tunable transmitter is reported exhibiting high performance in a compact footprint. Variation in modulation characteristics with wavelength intrinsic to MQW InP MZMs is shown to be readily managed.
Th2.6.3 11:30 – 11:45
1.3-Vpp Push-pull Drive InP Mach-Zehnder Modulator Module for 40 Gbit/s Operation
K Tsuzuki , H Kikuchi , E Yamada , H Yasaka , NTT Corporation , Japan , T Ishibashi , NTT Electronics Corporation , Japan
We have developed a compact packaged InP-based Mach-Zehnder modulator equipped with phase-matched dual electrical lines. A small driving voltage of 1.3 Vpp with a push-pull drive configuration and 40-Gbit/s error-free operation are confirmed.
Th2.6.4 11:45 – 12:00
43-Gbit/s Operation of 1.55µm Electro-Absorption Modulator Integrated DFB Laser Modules for 2-km Transmission
K Naoe , N Sasada , Y Sakuma , K Motoda , T Kato , M Akashi, M Okayasu, K Uomi, Opnext Japan, Inc. , J apan , J Shimizu , T Kitatani , M Aoki , Hitachi Ltd. , Japan
We successfully demonstrated 43-Gbit/s operation of 1.55 µ m electro-absorption modulator integrated DFB laser module for 2-km transmission for the first time. A clearly opened eye, 0.6 dB power penalty, and +2.1 dBm output power were obtained respectively.
Th2.6.5 12:00 – 12:15
Narrowband 20 Gbit/s Quaternary Intensity Modulation Generated by Duobinary 10 Gbit/s Modulation in 2 Quadratures
S K Ibrahim , S Bhandare , R. Noé , University of Paderborn , Germany
Two duobinary 10Gbit/s data streams and a QPSK modulator allow to generate 20Gbit/s quaternary intensity modulation having ~6GHz bandwidth. Sensitivity, CD, and PMD tolerance of this novel scheme are –21.5dBm, –20...+140ps/nm and 20ps, respectively
Th2.6.6 12:15 – 12:30
High-Power Semi-Cooled Electroabsorption Modulator Integrated with Laser for 10.7Gbps-80km Optical Transceivers
Y Miyazaki , T Yamatoya , K Matsumoto , T Aoyagi , T Nishimura , Mitsubishi Electric Corporation , Japan
Absorption layers of EML have been optimised by using shallow quantum well for high-power and ultralow-chirp operation under semi-cooled conditions. +3.0dBm average fibre launched power has been compatible with 10.7Gbps-1600ps/nm transmission at 45C
Thursday, 29 September – 3rd Quarter Regular Sessions (14:00 – 15:45) Clyde Auditorium
Th3.1 – Metro and Security Systems Networks
Chair: Ionnis Tomkos , Athens Information Technology Center, Greece
Th3.1.1 14:00 – 14:15
3.3 Gigahertz Clocked Quantum Key Distribution System
KJ Gordon , V Fernandez , RJ Collins , G S Buller, Heriot-Watt University , United Kingdom , I Rech , S D Cova , Politecnico di Milano , Italy, P D Townsend , University College Cork , Ireland
A fibre-based quantum key distribution system operating up to a clock frequency of 3.3GHz is presented. The system demonstrates significantly increased key exchange rate potential and operates at a wavelength of 850nm.
Th3.1.2 14:15 – 14:30
Field Demonstrator of a Chaos Encrypted Optical Transmission System
A Argyris , A Bogris , D Syvridis , University of Athens , Greece
We report on the successful demonstration of a chaos encrypted gigabit optical transmission system utilizing a commercially available optical network installed in the metropolitan area of Athens.
Th3.1.3 14:30 – 14:45
Self-Pulsating Laser Based All-Optical Clock Recovery Applied in 421 km Field Experiment for 170.6 : 42.7 Gbit/s OTDM Demultiplexing
J Slovak , T Tekin , C Bornholdt , B Sartorius , Heinrich-Hertz-Institut , Germany , E. Lach , M. Schmidt , Alcatel Research & Innovation , Germany, S. Vorbeck , R. Leppla , T-Systems International GmbH, Technologiezentrum , Germany
A self-pulsating PhaseCOMB-laser is successfully applied for triggering of 170.6:42.7 Gbit/s DEMUX-circuit in 8 x 170.6 Gbit/s DWDM field experiment. An error free detection of the demultiplexed PRBS signal after 421 km transmission was achieved.
Th3.1.4 14:45 – 15:00
Robust and Scalable All-Optical Metro WDM Ring Network Based on Gain Clamped Waveguide Amplifiers
T Rogowski , Scuola Superiore Sant'Anna , Italy , S Taccheo , Politecnico di Milano, Italy, J. Shmulovich , Inplane Photonics , United States , K Ennser , CNIT National Laboratory of Photonic Networks , Italy
We demonstrate an all-optical WDM ring network immune to transients based on individual optically gain clamped waveguide amplifiers. We prove the scalability of the obtained results to N-spans.
Th3.1.5 15:00 – 15:15
Study of Super-Wideband FM Technique Using Optical Homodyne-Detection Scheme
T Ohira , K Masuda , M Fuse , Matsushita Electric Industrial Co., Ltd. , Japan
We propose a super-wideband FM technique using optical homodyne-detection scheme for analog/digital hybrid multi-channel video distribution on optical access networks. This technique improves the CNR characteristic especially in the AM signal frequency band.
Th3.1.6 15:15 – 15:30
Optical ADD/DROP Multiplexer Based on 1-Meter-Long Bismuth Oxide-Based Highly-Nonlinear Fibre
G Meloni , M Scaffardi , CEIRC – Scuola Superiore Sant'Anna , Italy, P Ghelfi , A Bogoni , L Potì , Photonic Network National Laboratory – CNIT , Italy
Channel extraction, clearing, and insertion have been obtained exploiting 1-meter-long bismuth oxide-based optical fibre with a nonlinear coefficient of 1250W-1km-1. Penalties lower than 1.5dB in a 4X10Gbps OTDM system have been measured for all operations.
Th3.1.7 15:30 – 15:45
Towards All-Optical 320 Gb/s Add-Drop Multiplexing using a Nonlinear Optical Loop Mirror
E J M Verdurmen , J P Turkiewicz , E Tangdiongga , G.D. Khoe , H de Waardt, COBRA Research Institute Eindhoven University of Technology
160 Gb/s error-free all-optical add-drop multiplexing, 320 Gb/s error-free demultiplexing and the feasibility of all-optical add drop multiplexing at 320 Gb/s is shown.
Lomond Auditorium
Th3.2 – Optical Sampling and Monitoring
Chair: Masataka Nakazawa , University of Tohoku, Japan
Th3.2.1 14:00 – 14:15
Split-and-Delay Technique for Simplified High-Resolution All-Optical A/D Conversion Based upon Nonlinear Fibre-Optic Switch
K Ikeda , Y Miyoshi , K Kitayama, Osaka University , Japan , H Tobioka , T Inoue , S Namiki , Furukawa Electric Co., LTD. , Japan
A simplified high-resolution all-optical analog-to-digital (A/D) conversion is investigated. The feasibility of proposed split-and-delay technique using a cascade single nonlinear fibre-optic switch for quantizing and encoding is experimentally demonstrated for 3-bit A/D conversion at 10GS/s.
Th3.2.2 14:15 – 14:30
Advanced Envelope Detection Method with Novel-Optical PLL for Optical Sampling Trigger and Waveform Measurement of 160-Gb/s RZ Signal
Y Tsuda , A Otani , F Hirabayashi , Anritsu Corp. , Japan
We have developed an advanced envelope detection method with novel-optical PLL without electrical time base synchronization. This paper reports the principle of this method and demonstrates 160-Gb/s optical signal measurement.
Th3.2.3 14:30 – 14:45
<1-ms Highly-Repeatable Polarization-State Generator and Analyzer for 40-Gb/s System Performance Monitoring
L S Yan , General Photonics Corp & University of Southern California , United States , X Yao , L Lin, Z Chen, General Photonics Corp , United States, C Yu , Y Wang , A E Willner, University of Southern California , United States
We demonstrate a fast (<1 millisecond), all solid-state, highly repeatable (variation <0.1°) polarization state generator and analyzer using magneto-optic polarization switches and demonstrate OSNR performance monitoring in a 14x40-Gb/s WDM system.
Th3.2.4 14:45 – 15:00
Time-Resolved Optical Filtering Measurement of the Complex Electric Field for DPSK Signals
H-C Wang , H-K Chen , C-C Wu , K-P Ho, National Taiwan University , Taiwan
The electric field of a periodic optical signal is retrieved from sonogram by numerical time-resolved optical filtering algorithm. With initial guess from the craters and ridges of the sonogram, the algorithm converges within 20 iterations.
Th3.2.5 15:00 – 15:15
Chromatic Dispersion Monitoring of a Multi-Channel 40 Gbit/s System for Dynamically Reconfigurable Networks
L Meflah , B Thomsen , J Mitchell , P Bayvel , University College London , United Kingdom
A novel technique for chromatic dispersion monitoring is proposed. It utilises electro-optical mixing to dramatically decrease the number of high-bandwidth components required for a WDM 40Gbit/s chromatic dispersion monitoring system applicable in dynamically-reconfigurable optical burst switched networks.
Th3.2.6 15:15 – 15:45
Invited - High Performance All-Optical Waveform Sampling for Fibre Communication Systems
M Westlund, P A Andrekson, H Sunnerud, Chalmers University of Technology, Sweden
Performance measures and trade-offs of fibre-based all-optical sampling systems are presented and compared with alternative optical sampling techniques. A comparison with electrical sampling of 40 Gb/s eyediagrams demonstrates the benefit of optical sampling regarding sensitivity and impedance mismatch.
Argyll Suite
Th3.3 – Raman and Doped Fibre Amplifiers
Chair: Evgeny Dianov , Russian Academy of Science, Russia
Th3.3.1 14:00 - 14:15
UV-induced Excess Loss of Er- and Si-nanocrystal Co-doped Silica Waveguide for Optical Amplifier
J Nishii, AIST , Japan, S Choi, H Hosono, Tokyo Institute of Technology , Japan, T Taguchi, N Nakane, H Samata, Kobe University , Japan , Y Oshitani, M Saito, Ryukoku University , Japan
Loss of Er- and Si-nanocrystal co-doped waveguide increased reversibly and drastically by the top-pumping using 365-nm Hg lamp, suggesting the dense pumping even if by LED might be fatal to obtain a practical signal gain.
Th3.3.2 14:15 – 14:30
Enhanced Raman Amplifier Gain Performance with HNLF broadening
T J Ellingham , J D Ania-Castañón , S K Turitsyn , Aston University , United Kingdom
Nonlinear CW pump broadening over non-standard transmission fibre is used for the first time to achieve superior gain variation performance in a single-pump broadband Raman amplifier. A threefold increase in the bandwidth for 0.1dB gain variation is reported.
Th3.3.3 14:30 – 14:45
High Gain And Low Noise Discrete Amplifier Based On A Second Order Raman Fibre Ring Oscillator
S Faralli , C Cantini, G. Bolognini, F. Di Pasquale, Scuola Superiore Sant'Anna , Italy , P Kim , N Park, Seoul National University , South Korea , G Sacchi , Consorzio Nazionale Interuniversitario per le telecomunicazioni CNIT, Italy ,
We propose a second order counter-pumped Raman ring fibre oscillator for high gain and low noise discrete Raman amplification. BER measurement at 10Gb/s shows negligible penalties up to 20 dB net gain.
Th3.3.4 14:45 – 15:00
Impact of Signal Rise Time on Transient Power Amplitude in Forward Pumped Raman Amplifiers
D A Mongardien , S Borne , C Martinelli, D Bayart , Alcatel Research & Innovation Department , France
A numerical model describing transients in forward pumped Raman amplifiers has been experimentally validated. Use of realistic rise time (80ns) for channel addition reduces signal overshoot to 0.2dB in a 200km span with 14.5dB co-gain.
Th3.3.5 15:00 – 15:15
Absorption, Fluorescence and Optical Amplification in MCVD Bismuth-Doped Silica Glass Optical Fibres
V V Dvoyrin , V M Mashinsky , E M Dianov , A A Umnikov , M V Yashkov , A N Guryanov, Russian Academy of Sciences , Russia
Optical fibres with bismuth-doped silicate glass core were fabricated by MCVD technique for the first time. Absorption and luminescence spectra, luminescence lifetime, and optical amplification at wavelength of 1.3 µm were studied in such fibres.
Th3.3.6 15:15 – 15:30
Single-Stage S-Band Depressed-Cladding EDFA with Bending Loss ASE Suppression
F Poli , M Foroni , A Cucinotta , S Selleri , University of Parma , Italy , P Vavassori , PETROCERAMICS S.r.l. , Italy
A S-band single-stage fibre amplifier with 25 dB peak gain has been obtained by suppressing C-band ASE through bending losses in a depressed-cladding silica-based erbium-doped fibre with 15 cm bend diameter.
Th3.3.7 15:30 – 15:45
Alumino-Silica Heavy Doped Fibres for Compact WDM-EDFAs
C Simonneau , C Moreau , l Gasca , D Bayart, Alcatel Research & Innovation , France
WDM amplification tests performed on highly erbium-doped fibres show that 36 dB/m fibres offer the best trade-off to design efficient compact WDM amplifiers
Forth Room
Th3.4 – Optical Packet Switching IV
Chair: Daniel Blumenthal , University of California, United States
Th3.4.1 14:00 – 14:15
Switching Performance of an Optical Label Switch using Optical Digital-to-Analog Conversion-based Header
Processor with Self-Gate-Pulse-Generator and Power Equalizer
H Uenohara , Tokyo Institute of Technology & JST-CREST Japan, S Shimizu , K Kobayashi , Tokyo Institute of Technology, Japan
Optical header recognition with self-gate-pulse-generation and power equalization of an optical digital-to-analog converter was achieved. Header recognition with 3dB input dynamic range and optical label switch performance were realized.
Th3.4.2 14:15 – 14:30
A Novel All-Optical Header Processing System for DPSK Packets Based on Time-to-Wavelength Conversion
N Calabretta , G Contestabile , E Ciaramella , Scuola Superiore Sant'Anna , Italy
We demonstrate an highly-scalable header processor for DPSK packets based on time-to-wavelength-conversion requiring only four optical functions independently of the number of headers. Experiments demonstrate that four headers are distinguished at different outputs.
Th3.4.3 14:30 – 14:45
Experimental Demonstration of Sub Carrier Multiplexed Optical Label Swapping Featuring 20GB/s Payload Speed and 622Mb/s header conveyed @18.3Ghz
A Martinez, D Pastor, J Capmany, B Ortega, ITEAM, Universidad Politécnica de Valencia, Spain , P-Y Fonjallaz, M Popov, Acreo AB, Sweden T Berceli, T Banky, BUTE, Hungary
We report a successful experiment of SCM optical label swapping featuring the highest payload speed and spectral density figure of merit ever demonstrated for this technique. Error free header and payload detection is achieved.
Th3.4.4 14:45 – 15:00
Cascaded Operation of Optical Label Swapping using Optical Carrier Suppression, Separation and without Regular Wavelength Converter in a Multi-hop Label Switched Optical Network
A Chowdhury , J. Yu , G K Chang , Georgia Institute of Technology , United States
We demonstrate cascaded optical label swapping using optical carrier suppression and separation technique without requiring conventional wavelength converter in a multi-hop OLS network carrying 10Gbps DPSK payload and 2.5Gbps OOK label over 300Km SMF fibers.
Th3.4.5 15:00 – 15:15
Influence of Non-optimal Filtering on FSK/IM Modulated Signals
J P A van Berkel , J J Vegas Olmos , I Tafur Monroy , A M J Koonen , COBRA Research Institute, Eindhoven University of Technology , The Netherlands
Non-optimized optical filtering of a combined FSK/IM modulated signal can cause FSK-to-IM conversion. Simulations and experiments demonstrated that a maximum frequency detuning of 15GHz is tolerable with respect to an AWG router.
Th3.4.6 15:15 – 15:30
All-optical PSK-encoded Label Recognition for All-optical Packet Switching
P Boffi, M Martinelli, Politecnico di Milano & CoreCom , Italy , D Piccinin , CoreCom , Italy
We demonstrate all-optical recognition of PSK-encoded label using a coherent delay-line correlator operating passively, in real-time and in total asynchronous way. By exploiting PSK label encoding, all-optical label recognition is combined to all-optical label swapping.
Th3.4.7 15:30 – 15:45
Techno-Economic evaluation of Optical Packet/Burst Switching
E Zouganeli , A Solem , H Kjønsberg , R Andreassen , Telenor R&D , Norway, B Feng , Oslo University College , Norway , N Stol, B Helvik , Norwegian University of Science and Technology , Norway , A Sudbø , University of Oslo , Norway
We present a techno-economic comparison of an optical burst switched network with optical circuit switching and IP/MPLS. Our results reveal the conditions under which optical packet/ burst switching becomes a viable solution and may outcompete currently commercial technologies.
Alsh Room
Th3.5 – Physical Performance in Optical Networks
Chair: Andrew Lord , BT , UK
Th3.5.1 14:00 – 14:15
Experimental Implementation of Dynamic in-Service Performance Monitoring for Lambda Services
C Pinart , R Martínez , Centre Tecnològic de Telecomunicacions de Catalunya , Spain, G Junyent , Centre Tecnològic de Telecomunicacions de Catalunya , Spain & Universitat Politènica de Catalunya , Spain
A novel approach to in-service OPM combining optical and IP information is presented. Experimentation results with an ASON/GMPLS testbed confirm suitability, in terms of delays, for SLA guarantee and physical aware routing for lambda services.
Th3.5.2 14:15 – 14:30
Uncorrelated Beat Noise Measurement for Optical Signal-to-Noise Ratio Monitoring
W Chen , R S Tucker , X Yi , W Shieh , J S Evans , University of Melbourne , Australia
We present theoretical analysis and experimental demonstration of a new optical signal-to-noise ratio monitoring method using uncorrelated beat noise. The measurement errors are less than 0.6 dB in a 10 Gb/s system.
Th3.5.3 14:30 – 14:45
Optical Retiming for Jitter Measurement Calibration
R Van Tuyl , Agilent Technologies, United States , D Ingram , D Taylor, Agilent Technologies , United Kingdom , D Humphreys , National Physical Laboratory, United Kingdom
Intrinsic noise of optical jitter measuring receivers can be characterized by using a jitter-free optical calibration pattern. We report a method for producing a 10Gb/s NRZ optical calibration pattern with measured pk-pk jitter <5mUI.
Th3.5.4 14:45 – 15:00
Field Trial of Optical 3R Regenerator over Installed Cable
M Yagi , S Satomi , S Ryu , Japan Telecom Co., Ltd. , Japan , K Okamura , M Aoyagi , Kyushu University , Japan , S Asano , National Institute of Informatics , Japan
We have successfully demonstrated a field trial of an optical 3R regenerator over 400-km-long installed cable. A newly developed polarization control system was adopted at the input of a mode-locked laser for all-optical clock recovery.
Th3.5.5 15:00 – 15:15
A Simple Scheme to Suppress Transient-Induced Degradations in Transparent Optical Networks
E Ciaramella , M Presi , L Giorgi , A D'Errico , Scuola Superiore Sant'Anna , Italy ; S. Herbst , J-P. Elbers , Marconi ONDATA , Germany
In transparent networks, fibre cuts can generate severe penalties affecting even disjoint lightpaths. We experimentally demonstrate that a simple and cost-effective scheme is able to fully suppress them in a realistic network environment.
Th3.5.6 15:15 – 15:30
Physical Impairment Aware Signalling for Dynamic Lightpath Set Up
F Cugini , CNIT , Italy , N Andriolli , L Valcarenghi , P Castoldi , Scuola Superiore Sant'Anna , Italy ,
A signalling-based approach for the dynamic estimation of the optical signal quality during lightpath set up is proposed and evaluated. Low blocking is obtained without requiring any routing protocol modification.
Th3.5.7 15:30 – 15:45
Benefits of Q-factor based Routing in WDM Metro Networks
P Kulkarni , A Tzanakaki , C Mas Machuka , I Tomkos , Athens Information Technology ( AIT) , Greece
A novel study focusing on impairment constraint routing based on Q-factor as the routing cost criterion in a metro WDM network has shown significant benefits in terms of physical performance optimisation and blocking probability reduction.
Boisdale Room
Th3.6 – Silica-Based Integrated Components
Chair: Christian Lerminiaux , CEA-LETI, France
Th3.6.1 14:00 -14:30
Invited - 40 Gbit/s Reconfigurable Optical Add-Drop Multiplexer based on Microring Resonators
D H Geuzebroek , E J Klein , H Kelderman , A Driessen, University of Twente , The Netherlands , C Bornholdt , Fraunhofer Institute for Telecommunications, Heinrich-Hertz-Institut , Germany
A fully pigtailed and packaged ultra-compact reconfigurable 4-channel optical add-drop multiplexer is shown based on SiO 2 /Si 3 N 4 microring resonators. Measurements demonstrate full add/drop capability for 40 Gbit/s datasignal as well as the ability to multicast a channel.
Th3.6.2 14:30 – 15:00
Invited - Ultra Small 16 ch Variable Optical Attenuator Multiplexer (V-AWG) using Multi-Chip PLC Integration Technology for ROADM
A Kaneko , Y Doi , Y Hashizume , S Kamei , Y Tamura , I Ogawa , T Kominato , S Suzuki , NTT Photonics Laboratories , Japan
We have developed an ultra small 16 ch V-AWG by using multi-chip PLC technology. The insertion loss is 3.2 dB and the PDL at 25 dB attenuation is 0.3 dB. The module is 90 x 55 x 14 mm in size and this is less than 1/10 the volume of a MSA type V-AWG.
Th3.6.3 15:00 – 15:15
Compact 8 x 8 Silica-based PLC Switch with Compressed Arrangement
T Watanabe , S Sohma , T Goh , T Shibata , H Takahashi , NTT Photonics Laboratories , Japan
We propose a novel compact optical circuit arrangement for a matrix switch. The fabricated 8 x 8 silica-based PLC switch is half the size of a previously reported switch and exhibits an insertion loss as low as 2.5 dB.
Th3.6.4 15:15 – 15:30
Hybrid Free-Space and Planar Lightwave Circuit Wavelength-Selective 1×3 Switch with Integrated Drop-Side Demultiplexer
D M Marom , C R Doerr , M Cappuzzo , E Chen , A Wong-Foy , L Gomez , Bell Laboratories, Lucent Technologies , United States
We propose and demonstrate a 100GHz-spaced, wavelength-selective switch with a single input port, three multiplexed output ports for mesh networking functionality, and an integrated demultiplexer for locally dropping channels for detection.
Th3.6.5 15:30 – 15:45
Low Loss and Compact Arrayed Waveguide Grating with Double-Core Spot-Size Converters
K Watanabe , S Kamei , H Hirota , M Kohtoku , Y Inoue , NTT Photonics Laboratories , Japan
We achieved a very low insertion loss of 0.55 dB in an arrayed waveguide grating by successfully fabricating a double-core spot size converter that has a high index contrast core with a taper embedded in a low delta core.
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