Th4.2 - Post-Deadline Session 2
Chair: Edwin Pun, City University of Hong Kong, Hong Kong

Post deadline sessions are all a standard 15 (12 +3) minutes.

Th4.2.1 16.00 – 16.15
A Single-Chip Optical Equaliser Enabling 107-Gb/s Optical Non-Return-to-Zero Signal Generation
C R Doerr, P J Winzer, G Raybon, L L Buhl, M A Cappuzzo, A Wong-Foy, E Y Chen, L T Gomez, M Duelk, Bell Laboratories, Lucent Technologies, United States

We demonstrate a single-chip optical equaliser that overcomes modulator bandwidth limitations in the first reported 107-Gb/s electrically time- division multiplexed non-return-to-zero transmitter. A high sensitivity of 21-dB optical signal-to-noise ratio at 10-3 bit-error ratio was achieved.

Th4.2.2 16.15 – 16.30
WDM-enabled, 40Gb/s Hybrid Integrated All-optical Regenerator
G Maxwell, R McDougall, R Harmon, M Neild, L Rivers, A Poustie, Centre for Integrated Photonics, United Kingdom, F Gunning, X Yang, A D Ellis, R Webb, R J Manning, University College Cork, Ireland

We demonstrate a WDM-enabled optical regenerator incorporating wavelength selective filters for signal combining and filtering. The consequent 3dB loss reduction allows ultra-low power switching and error-free BER performance at 40Gb/s for all PRBS pattern lengths.

Th4.2.3 16.30 – 16.45
Low Energy Ultrafast Switching in Silicon Wire Waveguides
L R Nunes, T K Liang, K S Abedin, T Miyazaki, M Tsuchiya, NICT, Japan, D Van Thourhout, P Dumon, R Baets, The Chinese University of Hong Kong, Hong Kong, H K Tsang, Ghent University, Belgium

1.9ps optical switching at 40GHz repetition rate has been successfully demonstrated in submicron-size silicon wire waveguides. Ultrafast operation is achieved by induced optical absorption from two-photon absorption (TPA) process. The device requires very low energy, less than 3pJ, to accomplish 92% of modulation depth.

Th4.2.4 16.45 – 17.00
Effect of a Weak Magnetic Field on Quantum Cryptography Links
M Brodsky, M Boroditsky, M D Feuer, AT&T Labs Research, United States, A Sirenko, Department of Physics, NJIT, United States

We study the performance of a commercial bidirectional Quantum Key Distribution system in the presence of a weak magnetic field (about 50 µT) applied along the fibre axis. We observe a quadratic increase in quantum bit error rate with the angle of Faraday rotation.

Th4.2.5 17.00 – 17.15
Single Channel Transmission over 9280 km at 10-Gb/s using Small Form Factor Chirp Managed Laser Generating RZ AMI Modulation Format
S Chandrasekhar, A H Gnauck, L L Buhl, Bell Laboratories, Lucent Technologies, United States, X Zheng, D Mahgerefteh, Y Matsui, K McCallion, Z F Fan, P Tayebati, AZNA LLC, United States

We demonstrate operation of a compact chirp managed laser under return-to-zero modulation resulting in an alternate mark inversion format. Single-channel transmission over 8000 km of standard single mode fibre is achieved without any penalty.

Th4.2.6 17.15 – 17.30
Multi-banded Coherent WDM Transmission
F C Garcia Gunning, T Healy, R J Manning, A D Ellis, University College Cork, Ireland

The world’s first 1.5Tbit/s multi-banded Coherent-WDM system is demonstrated, in which five co-polarised bands of 298Gbit/s-NRZ channels are transmitted over 80.4km of SMF-28e in a simple cost-effective arrangement, with an aggregate spectral efficiency of 0.83b/s/Hz.

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