Minimizing the power penalty of a 100-Gb/s NOLM demultiplexer employing an optical soliton control pulse

Cheung, Chin Ying, Ghassemlooy, Zabih and Swift, Graham (1999) Minimizing the power penalty of a 100-Gb/s NOLM demultiplexer employing an optical soliton control pulse. In: Optical Devices for Fiber Communication. SPIE, pp. 148-157. ISBN 9780819434401

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Official URL: http://dx.doi.org/10.1117/12.371251

Abstract

A bit error rate (BER) analysis for the Non-linear Optical Loop Mirror (NOLM) demultiplexer is presented using a combined optical receiver and NOLM model. The control pulse used in the NOLM model is assumed to be of soliton shape in order to obtain a flat-top switching window to reduce the effect of timing jitter between the control and signal pulses. The NOLM model is incorporated into an optical receiver model for a bit error rate (BER) analysis. It is found that noise due to timing jitter, cross-talk and BER are strongly dependent on the walk-off time between the control and signal pulses in the NOLM demultiplexer. Results show that the power penalty of a NOLM demultiplexer using a soliton control pulse can be minimized with an optimum value of walk-off time. In addition the cross-talk of the Terahertz Optical Asymmetric Demultiplexer (TOAD) has been investigated using a TOAD model. Simulation results show that the cross-talk of a TOAD increases as the asymmetry time is increased. A comparison of the two devices for 100 Gb/s demultiplexing shows that the cross-talk of a TOAD (with an optical amplifier recovery time of 300 ps) is at least 3 dB lower than that of NOLM for maximum demultiplexed output.

Item Type: Book Section
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Becky Skoyles
Date Deposited: 25 Apr 2014 14:14
Last Modified: 24 Oct 2017 08:55
URI: http://nrl.northumbria.ac.uk/id/eprint/16162

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