Monday, 26 September 3rd Quarter Regular Sessions (14:00 15:45)
Lomond Auditorium
Mo3.2 Ultra Long Hall Transmission
Chair: Kazuo Hagimoto , NTT, Japan
Mo3.2.1 14:00 14:15
Investigation on a Stabilised DPSK Receiver at 10Gb/s with a 5111km-Long Transmission
L Becouarn , T Boissau , B Julien , G Grandpierre, S Dupont, P Plantady , J-F Marcerou
Alcatel Submarine Networks , France
We demonstrate an active stabilisation technique of a DPSK demodulator at 10Gb/s with temperature and laser wavelength drift compensation. The Q-factor fluctuations of a 5111km transmission are reported.
Mo3.2.2 14:15 14.30
640 Gb/s (64 x 12.3 Gb/s) 12,700 km RZ-DPSK WDM Transmission with 75 km Repeater Spacing
B Bakhshi , M Manna , E A Golovchenko , P Corbett , S Jiang , H Li , S M Abbott , M Nissov , G Harvey , R Zhu , Q Zhong , Tyco Telecommunications , United States
Feasibility of a 640 Gb/s over 12,700 km WDM transmission is evaluated. Utilising 75 km repeater spacing and 18 nm C-band EDFAs, this demonstration shows high potential for the next generation transpacific communication systems.
Mo3.2.3 14:30 14:45
System Impact of Fibre Repairs on a Nx40Gbit/s All-Raman Amplified Submarine Transmission
G Charlet , P Tran , S Bigo , Alcatel Research & Innovation , France
The consequences of fibre repairs on the system performance of Nx40Gbit/s submarine links are emulated in a recirculating loop. After adjustment of the cumulated dispersion, no more than 1.5dB Q-factor penalty is found.
Mo3.2.4 14.45 15:00
Long span 10x160 km 40 Gb/s Line Side, OC-768c Client Side Field Trial Using Hybrid Raman/EDFA Amplifiers
D Chen, T J Xia , G Wellbrock , D L Peterson Jr , MCI , United States, S Y Park , E Thoen, C Burton, J Zyskind, Optovia, United States, S J Penticost, P Mamyshev, Mintera, United States
We report a field trial demonstrating Ultra-Long-Haul of long span transmission on mixed 10/40-Gb/s system using highly effective combination of hybrid-Raman-EDFA-Amplifiers and CS-RZ enabled a total transmission distance of 1600km with just 10 amplified spans.
Mo3.2.5 15:00 15:15
Ultra-Wideband 10.7 Gb/s NRZ Terrestrial Transmission Beyond 3000KM Using All-Raman Amplifiers
A Puc , G Grosso , P Gavrilovic, H Fevrier , A Kaminski , S Burtsev , D Chang , M Foster , W Pelouch , P Perrier , Xtera Communications, Inc. , United States
The operation of 100nm-bandwidth amplifiers, based on a tight integration of lumped and distributed Raman amplification is demonstrated in a 3000km + loop transmission experiment using inexpensive transponder technology.
Mo3.2.6 15:15 15:30
Investigation of Advanced Dispersion Management Techniques for Ultra-Long Haul Transmissions
J-C Antona , M Lefrançois , S Bigo , Alcatel Research & Innovation , France
We investigate the potential of double-period dispersion management techniques to improve Ultra-Long Haul WDM systems and match optical networks constraints. We particularly outline the crucial impact of the cumulated dispersion between consecutive nodes.
Mo3.2.7 15:30 15:45
Transmission of 42.7-Gb/s VSB-CSRZ over 1600 km and Four OADM Nodes with a Spectral Efficiency of 0.8-bit/s/Hz
G Raybon , A Agarwal , S Chandrasekhar , R-J Essiambre , Bell Laboratories, Lucent Technologies , United States
We report the longest transmission of a binary-encoded signal at 0.8 bit/s/Hz information spectral efficiency with co-polarised channels and multiple optical add/drop multiplexers. The penalty after 1600-km transmission of 50-GHz spaced 42.7-Gb/s VSB-CSRZ channels and four OADMs is 3.6 dB.
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Argyll Suite Mo3.3 Optical Network Architectures
Chair: Masatoshi Suzuki, KDDI Labs, Japan
Mo3.3.1 14:00 14:15
Robust Network Design and Selective Randomised Load Balancing
P J Winzer , F B Shepherd , M Zirngibl, Bell Labs, Lucent Technologies , United States , P Oswald , International University Bremen , Germany
Randomised load balancing across a selected subset of nodes in a circuit-switched network without control plane supports dynamically changing traffic patterns at lower cost than a packet-switched network.
Mo3.3.2 14:15 14:30
Pre-Planned Multicast Protection Approaches in WDM Mesh Networks
A Khalil , A Hadjiantonis , G Ellinas , M A Ali , The City University of New York , United States
This work proposes new protection schemes that optimise the routing heuristics to provision survivable unicast as well as multicast connection requests in WDM-mesh networks.
Mo3.3.3 14:30 14:45
Hybrid Optical Ring Network Architectures for the MAN
M Nord , Research Center COM, Technical University of Denmark , Denmark & Telenor R & D, Norway
Hybrid SWRON-OPS ring network architectures are proposed. A simulation based dimensioning study shows that hybrid architectures combine low hardware complexity of a SWRON, with fair and efficient support of unbalanced traffic of an OPS network.
Mo3.3.4 14:45 15:00
Demonstration of GMPLS-Controlled Dynamic Point-to-Multipoint Trees in Optical Networks
X Wei , J Sun, Fiberhome Telecommunication Technology Co. Ltd. , China , Y Jin , W Sun, W Guo , W Hu, Shanghai Jiao Tong University, China , G Zhang , Ministry of Information Industry , China ,
Dynamic point-to-multipoint trees were demonstrated in optical networks for the first time. Setup, teardown, grafting and pruning operations of trees were successfully achieved by using extensions to GMPLS protocols.
Mo3.3.5 15:00 15:15
Cost Analysis of the Survivability Implementation in MPLS over Optical Transport Networks
Wojtek Bigos , France Télécom R&D - CORE/MCN , France
This paper investigates the cost effectiveness of two options for the survivability implementation in MPLS over OTNs: single- vs. multilayer survivability. The comparative analysis shows the influence of the traffic granularity on the survivability cost.
Mo3.3.6 15:15 15:30
Efficient Routing Algorithms for Hierarchical Optical Transport Networks
E Marín -Tordera , X Masip-Bruin, S Sánchez-López , J Solé-Pareta , Technical University of Catalonia (UPC) , Spain
Automatically Switched Optical Networks (ASON) specifications strongly recommends a hierarchical network architecture. In this paper authors propose three hierarchical routing algorithms, aiming to optimise the global network performance, while guaranteeing scalability.
Mo3.3.7 15:30 15:45
Improving the Scalability of Lightpath Assignment Algorithms in Dynamic Networks
A Zapata , Universidad Tecnica Federico Santa Maria , Chile & University College London , United Kingdom
P Bayvel , University College London , United Kingdom
The lowest-blocking dynamic lightpath allocation algorithm to date (AUR-E) is impractical as scales poorly with the number of nodes. We propose a new algorithm which significantly improves AUR-E scalability whilst maintaining its high performance.
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Forth Room Mo3.4 Fibre Lasers
Chair: Hervé Lefèvre, iXCore S. A. S, France
Mo3.4.1 14:00 14:15
Optically Uniform Carbon Nanotube - Polyimide Nanocomposite: Application to 165 fs Mode-Locked Fibre Laser and Waveguide
Y Sakakibara , K Kintaka, A G Rozhin, T Itatani, M Tokumoto, AIST , Japan , W M Soe, H Itatani, PI R&D Co. Ltd , Japan
Optically uniform carbon nanotube- polyimide nanocomposite saturable absorber is obtained for the first time using a block-copolymerised soluble polyimide. With this material we demonstrate pulse-shortening,165 fs mode-locked fibre laser and waveguide.
Mo3.4.2 14:15 14:30
Generation of 10-GHz, 2-ps Optical Pulse Train with High Extinction Ratio and Low Timing Jitter from a Continuous Wave Tunable over the Entire C Band
K IgarashiI , K Katoh , K Kikuchi , University of Tokyo , Japan
We demonstrate 10-GHz, 2-ps optical-pulse generation in the C band from a CW light. The high quality of optical pulses in terms of timing jitter and extinction ratio enables 160-Gb/s applications of our pulse generator.
Mo3.4.3 14:30 14:45
Repetition Rate and Wavelength Tunable Picosecond Optical Pulse Source Employing Square-Wave-Driven Modulator, Comb-like Profiled Fibre Compressor and Pulse Timing Stabiliser
Y Ozeki , PRESTO, Japan Science and Technology Agency , Japan , J Hiroishi , R Sugizaki, M Takahashi, M Sakano , S Namiki, Fitel Photonics Lab., Furukawa Electric Co., Ltd. , Japan , S Takasaka, Furukawa Electric Co., Ltd. , Japan
We present a low-pedestal optical pulse source with the repetition rate tunability of 9-15 GHz and the wavelength tunability of 1530-1560 nm. A new timing stabilisation method using an IQ modulator is also demonstrated.
Mo3.4.4 14:45 15:00
All-Fibre Electro-Optic Tuning of Fibre Laser
N Myrén , KTH , Sweden , W Margulis , Acreo , Sweden
A fibre laser incorporating a sampled FBG and an electro-optic all-fibre modulator is demonstrated. The poled fibre modulator allowed for 4 nm electro-optic tuning and locking the laser wavelength to a 50-GHz grid.
Mo3.4.5 15:00 15:15
Reconfigurable Multi-Wavelength Distributed Fibre Lasers
G Brochu , Ph Giaccari, S LaRochelle, Université Laval , Canada
We demonstrate independent switching of the lines of a multi-wavelength fibre laser with spatially distributed cavities by using localised heating points. Output power equalisation of the laser lines is also achieved.
Mo3.4.6 15:15 15:30
Double and Single Cavity CW All-Fibre Optical Parametric Oscillators at 1515nm with Pump at 1557nm
M A Solodyankin , O I Medvedkov , E M Dianov , Fiber Optics Research Centre at the GPI RAS , Russia
We report operation of a continuous-wave all-fibre OPO at 1515nm based on 150m of HNLF with pump at 1557nm. The source generates 3mW in single-cavity and 25mW in double-cavity configuration formed by fibre Bragg gratings.
Mo3.4.7 15:30 15:45
A Novel Wavelength-Switchable Superimposed DBR Fibre Laser
Y Lai , G Lloyd , I Bennion , Aston University , United Kingdom
A novel compact, wavelength-switchable, single-mode DBR fibre laser configuration is demonstrated. Stable single-line or wavelength-switching operations are achieved, by controlling the cavities' resonance mode conditions through a simple strain mechanism, without pump power limitations.
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Alsh Room Mo3.5 Nonlinear Fibre Devices
Chair: Daniel A Nolan, Corning, United States
Mo3.5.1 14:00 14:30
Invited - Nonlinear Fibre Devices Operating on Multiple WDM Channels
D V Kuksenkov, S Li, M Sauer and D A Nolan, Corning Incorporated, United States
Operating principles and experimental testing results are reviewed for several multiple-WDM channel nonlinear fibre devices: optical clock recovery, 2R regenerator and dynamic residual dispersion compensator.
Mo3.5.2 14:30 14:45
CL-Band Tunable Optical Pulse Compression Based on Stationary Rescaled Pulse Propagation in Comb-Like Profiled Fibre
T Inoue , S Namiki, Furukawa Electric , Japan
CL-band tunable optical pulse compression is demonstrated using comb-like profiled fibre designed by previously developed method based on stationary rescaled pulse propagation. A 40GHz-repeating 1.7ps-width RZ pulse sequence is generated in 1530-1610nm.
Mo3.5.3 14:45 15:00
Optical 2R Regeneration of 10Gbps Signal Using Cascaded Fibre Four Wave Mixing
S Mazumder , The University of Tokyo , Japan & NTT Communications, Japan , S Yamashita , The University of Tokyo , Japan
A fibre-FWM based all-optical 2R regeneration technique with near-ideal (step-like) transfer function is proposed. By setting proper modulation index and wavelength relations in a two-stage cascaded approach, we succeeded in near spectral-spread free 2R regeneration, with demonstration of improved performance for 10Gbps NRZ PRBS data transmission.
Mo3.5.4 15:00 15:15
10GHz to 2.5THz Optical Frequency Multiplication
G Meloni , G Berrettini, M Scaffardi, CEIRC Scuola Superiore Sant' Anna , Italy
A Bogoni , L Potì, M Guglielmucci, Photonic Networks National Laboratory CNIT , Italy
250-times repetition frequency multiplication for a 10GHz pulse train is numerically and experimentally demonstrated. Spectrum broadening, by nonlinear pulse chirping, and Talbot effect are exploited to obtain a 2.5THz clock signal.
Mo3.5.5 15:15 15:30
Broadband Supercontinuum Generation with Excellent Spectral Stability from a Highly-Nonlinear Fibre using an Amplified Noiselike-Pulse Train
S Khan , N Uehara, R&D, Santec , Japan , Y Takushima , RCAST, University of Tokyo , Japan
We demonstrate high-power, broadband supercontinuum (SC) generation by using noiselike pulses amplified by a conventional EDFA. The flat SC spectrum with excellent spectral stability of +/-0.03dB is achieved from 1050 nm to 1600 nm.
Mo3.5.6 15:30 15:45
Real-time ps-resolution optical sampler based on XPM-induced polarisation rotation in 1-meter-long bismuth oxide fibre
G Meloni , CEIRC Scuola Superiore Sant'Anna , Italy , A Bogoni , L Potì, Photonic Network National Laboratory CNIT , Italy
A real-time optical sampler based on XPM (Cross Phase Modulation)-induced polarization rotation in 1-meter-long bismuth oxide fibre has been implemented. Its accuracy resolving picosecond soliton pulses has been estimated exploiting a commercial autocorrelator.
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Boisdale Room Mo3.6 Tutorial Session
Mo3.6 14:00 15:00
Novel Devices Based On Photonic Crystal Microcavities
M Soljacic, MIT, United States
Photonic crystals (PhCs) enable microcavities that can have very large life-times, at the same time as having very small modal volumes. These unique features enable a range of novel applications, which will be presented in the current tutorial. For example, they provide excellent geometrical properties for structural enhancement of optical non-linear effects. In this manner, we will show a class of all-optical signal processing devices (based on optical bistability in non-linear PhC microcavities) of optimal performance characteristics. Lengths of these devices can be smaller than the wavelength of light, they can operate with only ~mW of power, and can be faster than 10ps, while being implemented in common materials (e.g. AlGaAs, Si). If such supreme structural enhancement of non-linearities is combined with a material of extreme non-linear response, like Electromagnetically Induced Transparency (EIT), devices of unprecedented optical non-linear response are enabled. We will show how this approach could lead to observation of non-linear phenomena at single photon energy levels. Moreover, placing material as strongly dispersive as EIT into a cavity greatly enhances its life-time; we will thus also show how this mechanism could be explored to design microcavities of extremely long life-times.
Marin Soljacic received a BsE degree in physics from MIT in 1996, and a BsE degree in electrical engineering from MIT in 1996. He got his PhD from physics department of Princeton University in 2000. After that, he was a Pappalardo fellow in the physics department of MIT. In 2003, he became a Principal Research Scientist in Research Laboratory of Electronics at MIT. Since the fall of 2005, he is an Assistant Professor in the physics department of MIT. He is the recipient of the Adolph Lomb medal from the Optical Society of America (2005).
His main research interests are in theoretical photonic crystals, and non-linear optics. He is a co-author of 53 scientific articles (published or submitted), and is a co-author of 15 patents pending (or issued) with the US patent office.
TOP OF PAGE Monday, 26 September 4th Quarter Regular Sessions (16:15 18:00)
Lomond Auditorium
Mo4.2 Raman and Broadband Amplification
Chair: Paul Harper, Aston University, United kingdom
Mo4.2.1 16:15 16:30
Quasi-Lossless Spans for Broadband Transmission and Data Processing
T J Ellingham , J D Ania-Castañón, R Ibbotson, X Chen, L Zhang, S K Turitsyn, Aston University , United Kingdom
We present the first experimental implementation of a recently designed quasi-lossless fibre span with strongly reduced signal power excursion. The resulting fibre medium can be advantageously used in lightwave communications and all-optical nonlinear data processing.
Mo4.2.2 16:30 16:45
Raman-Pumped Dispersion Compensating Fibre Amplifiers for Terminal-Only Compensation of 6 x 80 km, 10 Gb/s WDM Transmission
L E Nelson , M Du, T Loadholt , D Peckham, OFS Laboratories , United States, C G Joergensen , OFS Fitel Denmark, Denmark
We investigate application of booster and preamplifier dispersion-compensating Raman amplifiers as the only dispersion compensation for a typical 6x80km, 10Gb/s WDM metro link over standard single-mode fibre and compare performance to optimal inline compensation.
Mo4.2.3 16:45 17:00
Triple-(S/C/L)-Band WDM Transmission Using Erbium-Doped Fibre Amplifiers
R F Freund , L Molle, F Raub, C Caspar, M Karkri, C W Weber , Heinrich-Hertz-Institut , Germany
We demonstrate for the first time triple-band WDM transmission using only EDFAs for signal amplification. The results demonstrate error-free transmission in the S/C/L-band and upgradeability of conventional dual-(C/L)-band WDM-systems by simply adding S-band transmission capacity.
Mo4.2.4 17:00 17:15
4 x 10 Gb/s WDM Unrepeatered Transmission over 525 Km with Third-Order Cascaded Pumping
L Labrunie , V Faraci, Alcatel System Design and Technology Department , France , P Bousselet , Alcatel Research and Innovation Department , France , V Karpov, S Papernyi, V Protopopov, MPB Communications Inc , Canada
The first WDM unrepeatered demonstration using co-propagating distributed Raman and remotely-pumped amplification both based on third order cascaded pumping is reported. The 525km distance achieved represents the longest unrepeatered distance ever reported at 10Gb/s.
Mo4.2.5 17:15 17:30
320 Gb/s (32 x 12.3 Gb/s) 410 km Repeaterless WDM System Ready for Field Deployment
B Bakhshi , M Manna, G Mohs, P Corbett, E A Golovchenko, Tyco Telecommunications , United States , S B Papernyi , B Shum-Tim, MPB Communications Inc. , Canada
We present a record-capacity of 320 Gb/s for 10 Gb/s-based repeaterless WDM transmission beyond 400 km. Using RZ-DPSK, a high-power booster, distributed Raman amplification and a third-order remotely pumped EDFA, the system exhibits enough margin to be deployment-ready.
Mo4.2.6 17:30 17:45
Unrepeatered Transmission over 300km Non-Zero Dispersion-Shifted Fibre with Bi-Directionally Pumped Raman Amplification
M Du , L Nelson, D DiGiovanni, OFS Laboratories , United States , P Gaarde , OFS Fitel , Denmark
We have demonstrated the unrepeatered transmission of 20x10.66Gbit/s over 300km non-zero dispersion-shifted fibre with conventional NRZ modulation format by using bi-directionally pumped Raman amplification, as opposed to hybrid fibre types or remotely pumped EDF.
Mo4.2.7 17:45 18:00
All-Raman Unrepeatered Transmission over 440 km of Standard PSCF
A Kaminski , A Puc, D Chang , S Burtsev , G Grosso , H Fevrier , J Newby , D Krishnappa , C Harrel , V Varghese , M Foster , P Gavrilovic , W Pelouch , P Perrier , Xtera Comminucations, Inc , United States
All-Raman unrepeatered transmission over 440km of PSCF was achieved using backward and forward distributed pumping scheme and off-the-shelf terrestrial equipment. 8x10Gb/s channels were transmitted with good performance margin without using any intra-span component or special modulation format.
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Argyll Suite Mo4.3 Advanced PON Technologies
Chair: Gabriel Junyent, Universidad Politécnica de Catalonia, Spain
Mo4.3.1 16:15 16:45
Invited - Wide-Area WDM-Based Passive Optical Networks
H Suzuki, H Nakamura, M Fujiwara, K Iwatsuki , NTT Corporation, Japan
We describe a carrier-distributed WDM-based passive optical network (WDM-PON) that supports GbE and 10 GbE services in metro/access areas. The design guidelines and the feasibility of wide-area carrier-distributed WDM-PONs are clarified.
Mo4.3.2 16:45 17:00
Simple and Cost-Effective Fault Location Technique Using Bi-Directional OTDR and In-Service Line Testing Criteria for PONs
Y Koshikiya, N Araki, H Izumita, F Ito, NTT Access Network Service Systems Laboratories, NTT Corporation, Japan
This paper describes a simple and cost-effective technique for locating faults in the branched fibre regions between a splitter and ONUs in a PON. We also clarify the criteria for in-service line testing.
Mo4.3.3 17:00 17:15
Wavelength Independent RSOA-Based ONU for FTTH PON Implementation of Switched Ethernet Services
C Bock , C Arellano, J Prat, Universitat Politècnica de Catalunya , Spain
M P Thakur, J J Lepley, S D Walker, I Tsalamanis, University of Essex , United Kingdom
A novel RSOA-based ONU able to directly transmit Ethernet traffic over fibre using sub-carrier multiplexing is presented. The ONU is single-fibre wavelength agnostic and allows full-duplex operation. Transmission experiments up to 20km demonstrate its feasibility.
Mo4.3.4 17:15 17:30
A Reliable Wide-Area WDM-PON Using Wavelength-shifted Protection Scheme
H Suzuki , H Nakamura , J-I Kani , K Iwatsuki , NTT Corporation , Japan
We propose and demonstrate a wavelength-shifted protection scheme suitable for wide-area, carrier-distributed WDM-PONs. An experiment simulating the failure of a 40-km WDM transmission line is conducted and the protection performance is evaluated.
Mo4.3.5 17:30 17:45
Seamless Integration of WDM-PON and Wideband Radio-Over-Fibre for 8x 2.5Gb/s All-Optical Up-Conversion Using Raman-Assisted FWM
J Yu , J Gu, Z Jia, G-K Chang, Georgia Institute of Technology , United States , X Liu , Bell Laboratories, Lucent Technologies , United States
We experimentally demonstrate the seamless integration of an 8X2.5-Gbit/s WDM-PON and radio-over-fibre access system using all-optical up-conversion based on Raman-assisted FWM in a high-nonlinear fibre.
Mo4.3.6 17:45 18:00
Passive VDSL Transmission over Single Fibre Using Reflective Technique at Customer Premises
M P Thakur , J J Lepley, S D Walker, I Tsalamanis, University of Essex , United Kingdom
C Bock , C Arellano, J Prat, Universitat Politècnica de Catalunya, Spain
We describe the first demonstration of band-plan agnostic VDSL transmission over 20km single-mode fibre utilising colourless reflective ONU in an FTTC scenario. This experiment proposes upgradeable sub-carrier multiplexed high density network topology based on AWGs.
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Forth Room Mo4.4 Optical Packet Switching
Chair: Piet Demeester, Ghent University IMEC, Belgium
Mo4.4.1 16:15 16:45
Invited - Optical Packet Routing Using Orthogonal Labelling - Results from the FP5 STOLAS Project
A M J Koonen , J J Vegas Olmos, I Tafur Monroy, Eindhoven University of Technology , The Netherlands , J G J Jennen, Lucent Technologies NL , The Netherlands , C Peucheret , Research Center COM , Denmark , E van Breusegem , University of Ghent , Belgium , E Zouganeli, Telenor R&D, Norway
FSK/IM orthogonal labelling of data packets enables high router throughputs. The node cascadability is limited by the required payload extinction ratio, and the speed of the label swapping wavelength converters.
Mo4.4.2 16:45 17:00
An All-Optical Time-Serial Label and Payload Separator Generating a Synchronisation Pulse
J J Vegas Olmos , I Tafur Monroy, J P Turkiewicz, M Garcia Larrode, R Geldenhuys, A M J Koonen, Eindhoven University of Technology , The Netherlands
We demonstrate an all-optical label and payload processor based on nonlinear optical processing with semiconductor optical amplifiers. The processor separates the label and the payload, and generates a synchronisation pulse.
Mo4.4.3 17:00 17:15
Payload and Label Encoding with High Receiver Sensitivity Using a Single Mach Zehnder-Modulator
Y K Lize , Lucent Technologies, Bell Laboratories , United States & Ecole Polytechnique de Montreal , Canada , X Liu, Lucent Technologies, Bell Laboratories , United States , R Kashyap , Ecole Polytechnique de Montreal , Canada
We demonstrate two novel payload and label encoding techniques based on a single Mach-Zehnder modulator through modulations of bias and drive voltage. Experimental results show superior receiver sensitivity for both the label and the payload.
Mo4.4.4 17:15 17:30
Generation of a Polarisation Shift Keying Signal and its Application in Optical Labelling
N Chi , S Yu, University of Bristol , United Kingdom , L Xu , P Jeppesen , Technical University of Denmark , Denmark
We propose a novel scheme to generate a polarisation shift keying (PolSK) signal. Transmission and label swapping are experimentally demonstrated for an orthogonally labelled signal consisting of a 40Gb/s DPSK payload a 2.5Gb/s PolSK label.
Mo4.4.5 17:30 17:45
All-Optical Correlation Using Cascaded Logic XOR Gates Based on Active Mach-Zehnder Interferometers
J M Martinez , J Herrera, F Ramos, J Marti, Nanophotonics Technology Center, Universidad Politecnica de Valencia , Spain
A 2-bit address recognition scheme using cascaded logic XOR gates is demonstrated at 10 Gbit/s. Error-free operation with more than 13 dB extintion-ratio performance is achieved after the second stage by adjusting the label signal input power.
Mo4.4.6 17:45 18:00
ASK/RZ-DPSK Labelled Signal Generation Using Only One Mach-Zehnder Modulator
W-R Peng , Y-C Lu, J-H Chen , National Chiao-Tung University , Taiwan S Chi , National Chiao-Tung University , Taiwan & Department of Electrical Engineering, Yuan-Ze University , Taiwan
We propose a novel technique to generate ASK labelled RZ-DPSK payload using only one Mach-Zehnder modulator. The new scheme is more cost-effective, and with 2-dB better label sensitivity and almost the same payload performance.
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Alsh Room Mo4.5 Nonlinear Technology
Chair: Bozena Jaskorzynska, KTH, Sweden
Mo4.5.1 16:15 16:45
Invited - Tunable All Optical Delay via Slow and Fast Light Propagation in a Narrow Band Raman Assisted Optical Parametric Fibre Amplifier
D Dahan , G Eisenstein , Technion , Israel
We report the first demonstration of slow light in optical fibre using narrow band Raman assisted optical parametric amplification. A tunable delay of up to 162 ps was obtained for a 70 ps pulse.
Mo4.5.2 16:45 17:00Distortion Effects on Data Pulses in a Slow Light Tunable Delay Line Due to Stimulated Brillouin Scattering in a Highly Nonlinear Fibre
C Yu , T Luo , L Zhang , A E Willner , USC , United States
We experimentally demonstrate an all-optical tunable delay line based on slow light induced by stimulated Brillouin scattering in a highly-nonlinear fibre, and study its distortion effects on data pulses with different pulse widths.
Mo4.5.3 17:00 17:15
160 Gb/s Notch-Filtered Raman-Assisted XPM Wavelength Converter
M Galili , L K Oxenløwe, D Zibar, A T Clausen , Technical University of Denmark, Denmark , H-J Deyerl , Technical University of Chemnitz , Germany, N Plougmann, Rigshospitalet , Denmark , M Kristensen , University of Aarhus , Denmark
We report on a cross-phase modulation-based Raman-assisted wavelength conversion by a novel notch filtering approach at 160 Gb/s. Error free operation for all channels is shown along with regenerative properties.
Mo4.5.4 17:15 17:30
160-Gb/s Polarisation-Insensitive Wavelength Conversion Using Cross-Phase Modulation in a Circular-Birefringence Highly Nonlinear Fibre
T Tanemura , J H Lee, D Wang, K Katoh, K Kikuchi, University of Tokyo , Japan
We demonstrate a simple all-optical wavelength conversion scheme with 0.7-dB polarisation sensitivity, using cross-phase modulation in a circular-birefringence highly nonlinear fibre. Error-free pulsewidth-maintaining wavelength conversion of polarisation-scrambled 160-Gb/s data is realised for the first time.
Mo4.5.5 17:30 17:45
Simultaneous Pulse Train Generation and Wavelength Conversion in a Highly Nonlinear Fibre due to Multiwave Mixing
J F L Freitas , C J S de Matos, A S L Gomes, Universidade Federal de Pernambuco , Brazil , L Freire, Cidade Universitária, Recife, Brazil
Three cw waves are inserted into a fibre and multiwave mixing leads to both generation and wavelength conversion of a ~0.17-THZ pulse train. Pulses as short as 500 fs were observed.
Mo4.5.6 17:45 18:00
Narrow Linewidth Wavelength Converter with 70 nm of Signal Tuning Band Using Strain Distribution to Suppress SBS
J D Marconi , J M Chavez Boggio, H L Fragnito, UNICAMP , Brazil
By applying a strain distribution along 285 m of fibre to suppress SBS (10.7 dB power threshold increase) we demonstrate a narrow linewidth wavelength converter with 70 nm of signal tuning band.
Boisdale Room
Mo4.6 Tutorial Session
Mo4.6 16:15 17:15
Electronic Distortion Compensation
G Prati, CNIT, Italy
Fibre-optics communication has reached a point of system maturity where electronics can intervene with sophisticated signal processing techniques to compensate for or mitigate the effects of the communication impairments. These techniques have a record of successful applications in satellite, radio and wired communications since decades, and are now receiving considerable attention for the specific problems arising in fibre-optics communications, such as chromatic dispersion, polarisation mode dispersion, ASE noise, non linear effects.
Electronic processing techniques may broadly classified into transmit and receive techniques. Transmit electronic techniques refer to line coding, pulse shaping, appropriate filtering, and a combination of thereof, to achieve a suitable pre-distortion of the electrical signal capable of counteracting the effects that the optical signal will encounter during propagation up to the photodetector impinging. Receive electronic techniques deal with post-detection adaptive equalisation, either linear or non linear, and with the powerful Maximum Likelihood Sequence Detection (MLSD), a Viterbi-like non linear trellis structure capable of counteracting the effects of a full combination of impairments generated at all levels by the preceding chain, either in the optical or in the electrical domain.
In addition to thoroughly describing the above techniques, performance will be illustrated and compared with that of adaptive optical transversal equalisation prior to photodetection.
Giancarlo Prati
Prof. Giancarlo Prati was born in Rome in 1946. He graduated in 1972 at Pisa University in electronic engineering cum laude , alumnus of Scuola Superiore Sant'Anna. In 1978-79 he was Visiting Scientist at USC (University of Southern California), working in optical communications with Robert M.Gagliardi. In 1982 he was Visiting Associate Professor at University of Massachusetts at Amherst, while being from 1976 to 1986 a research scientist with the CNR Centre for Radio Transmission in Pisa. In the years 1986-88 he was Professor of telecommunications at Genoa University, then from 1988 until 2000 at Parma University, where in 1992-98 he was Dean of Engineering.
In 1993-95 he was member of the CNR Feasibility Committee for Photonics project. In 1997-99 he was a member of the Scientific Committee of the Italian Space Agency. From 1995 to 2004 he was Director of CNIT, a Consortium of 34 Universities for Telecommunications he promoted. Since 2000 he is with Scuola Superiore Sant'Anna in Pisa, where he has created a new research center on Photonic Networks.
He is now serving as President of CNIT, Executive Vice President of Scuola Superiore Sant'Anna and National Representative in the Information Society Technologies (IST) Committee at the European Commission.
Professor Prati pioneered the area of free space optical communications in the late Seventies and early Eighties at USC. Since then he has promoted and managed several national/international projects on optical communications and co/authored more than 70 papers and 5 patents in the field. He also worked until 1990 on Digital Radio Links, becoming co-recipient of the 1987 IEEE W.Bennett Prize Paper Award for his work on the stop-and-go blind equalisation of fading radio channels.
Since 1999 he has been a member of the TPC of ECOC and in 2004 he was elected to the IEEE Fellow grade.
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