All-optical 3R regeneration for DPSK signal based on a semiconductor optical amplifier scheme

This paper presents experimental demonstration of an all-optical 3 R (re-amplification, re-shaping, re-timing) regeneration scheme for differential phase-shift keying (DPSK) signals, which consists of a clock recovery module and a phase-regeneration module. The clock recovery module is based on a mo...

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Bibliographic Details
Published in:Applied optics (2004) 2020-04, Vol.59 (12), p.3526
Main Authors: Mao, Yaya, Liu, Bo, Zhao, Delin, Sun, Tingting, Zhao, Lilong, Ullah, Rahat, Wu, Yongfeng
Format: Article
Language:English
Subjects:
Bit error rate
Clock recovery
Demodulation
Fiber lasers
Light amplifiers
Modules
Phase modulation
Phase shift keying
Regeneration
Semiconductor optical amplifiers
Timing jitter
Vibration
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Summary:This paper presents experimental demonstration of an all-optical 3 R (re-amplification, re-shaping, re-timing) regeneration scheme for differential phase-shift keying (DPSK) signals, which consists of a clock recovery module and a phase-regeneration module. The clock recovery module is based on a mode-locked fiber laser, and the optical clock is extracted with low timing jitter of 29 ps from a degraded 10 Gb/s DPSK signal. The phase regenerator consists of a one-bit delay interferometer demodulation stage and a semiconductor optical amplifier in which cross-phase modulation and nonlinear polarization rotation occur simultaneously. The results show that, after 3 R regeneration, the receiver sensitivity is improved by more than 1.6 dB for a bit error rate of 1 E-9.
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.389952