Channel power control in optical amplifiers to mitigate physical impairment in optical network

The signal quality degradation, which occurs due to the aspects of fiber attenuation, splitter switch, and amplified spontaneous noise in erbium-doped fiber amplifier, may substantially erode the performance of optical communications. Among the above-mentioned factors, the physical-layer impairments...

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Bibliographic Details
Published in:Science China. Information sciences 2015-10, Vol.58 (10), p.1-8
Main Authors: Zhao, DongYan, Long, KePing, Zheng, YiChuan, Sun, Jian, Gong, WeiBing
Format: Article
Language:English
Subjects:
Algorithms
Computer Science
Controllers
Doped fibers
Erbium
Impairment
Information Systems and Communication Service
Light amplifiers
Optical communication
Optimization
Power control
Proportional integral derivative
Research Paper
Signal quality
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Summary:The signal quality degradation, which occurs due to the aspects of fiber attenuation, splitter switch, and amplified spontaneous noise in erbium-doped fiber amplifier, may substantially erode the performance of optical communications. Among the above-mentioned factors, the physical-layer impairments may significantly weaken the signal quality at the receiver. In this paper, the impact of both the channel power adjustment and the optical signal noise rate on the optimization of optical amplifiers over the optical propagation links is studied. Our objective is to employ a proper control strategy to effectively adjust the signal power level in the chain network. A new algorithm, which takes into account the physical-layer impairments in performance optimization, facilitates an impairment aware-proportional-integral-derivative neuron controller for improving the quality of transmission. Numerical results show that the proposed controller is capable of effectively compensating for the power impairments in optical links.
ISSN:1674-733X
1869-1919
DOI:10.1007/s11432-015-5330-x