Noise reduction in bidirectional passive optical networks with 10 Gb/s differential phase shift keying downstream and 2.5 Gb/s coded return-to-zero upstream signal

被引：0
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作者：
Pallab K. Choudhury
机构：
[1] Khulna University of Engineering & Technology (KUET),Department of Electronics and Communication Engineering
来源：
Optical and Quantum Electronics | 2016年 / 48卷
关键词：
Passive optical network; Reflective semiconductor optical amplifier; Rayleigh backscattering; Phase modulation; Return-to-zero; Non return-to-zero;
D O I：
暂无
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学科分类号：
摘要：
A novel scheme is demonstrated for reducing the noise of residual modulation and rayleigh backscattering in wavelength reused bidirectional wavelength-division-multiplexed passive optical networks with differential phase shift keying (DPSK) downstream and 8b10b coded return-to-zero (CoRZ) remodulated upstream. Reflective semiconductor optical amplifier based access network is designed and analyzed for 10 Gb/s DPSK downstream and 2.5 Gb/s CoRZ upstream over 25 km single feeder fiber. Error free operation is achieved with effective suppression of re-modulation noise and improved tolerance of rayleigh backscattering crosstalk down to 14 dB of signal to noise ratio.
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