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Proceedings Paper

Minimizing the power penalty of a 100-Gb/s NOLM demultiplexer employing an optical soliton control pulse
Author(s): Chin Ying Cheung; Zabih F. Ghassemlooy; Graham Swift
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Paper 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.

Paper Details

Date Published: 26 November 1999
PDF: 10 pages
Proc. SPIE 3847, Optical Devices for Fiber Communication, (26 November 1999); doi: 10.1117/12.371251
Show Author Affiliations
Chin Ying Cheung, Sheffield Hallam Univ. (United Kingdom)
Zabih F. Ghassemlooy, Sheffield Hallam Univ. (United Kingdom)
Graham Swift, Sheffield Hallam Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 3847:
Optical Devices for Fiber Communication
Michel J. F. Digonnet, Editor(s)

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