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24 January 2011 DPSK receiver-sensitivity enhancement using an SOA in front of the receiver
Ehab Awad
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Proceedings Volume 7959, Optical Metro Networks and Short-Haul Systems III; 79590F (2011) https://doi.org/10.1117/12.874084
Event: SPIE OPTO, 2011, San Francisco, California, United States
Abstract
A technique for DPSK receiver-sensitivity improvement is demonstrated using numerical simulations. It is based on reshaping and reamplifying of received 80 Gbit/s DPSK using an SOA before a one bit delay interferometer. The SOA re-amplifies data without adding amplitude or differential phase noise due to its gain-compression. The system is tested using 231-1 PRBS RZ-DPSK (NRZ-DPSK) loaded with both phase and amplitude noise. It shows 2dB (1.7dB) quality-factor improvement. The estimated BER by error-counting shows receiver-sensitivity improvement of (See manuscript)3dB in case of single-ended detection and (See manuscript)2dB ((See manuscript)2.5dB) in case of balanced-detection. This single-ended improvement is comparable to that of common DPSK balanced-detection technique.
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Ehab Awad "DPSK receiver-sensitivity enhancement using an SOA in front of the receiver", Proc. SPIE 7959, Optical Metro Networks and Short-Haul Systems III, 79590F (24 January 2011); https://doi.org/10.1117/12.874084
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KEYWORDS
Receivers
Phase shift keying
Interferometers
Error analysis
Signal to noise ratio
Bandpass filters
Numerical simulations
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