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A Simple Optical Signal to Noise Ratio Monitoring Technique for OADM  

Youn, Ji-Wook (Optical Communications Department, Electronics and Telecommunications Research Institute)
Park, Heuk (Optical Communications Department, Electronics and Telecommunications Research Institute)
Kim, Kwang-Joon (Optical Communications Department, Electronics and Telecommunications Research Institute)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.39, no.10, 2002 , pp. 43-47 More about this Journal
Abstract
A simple optical signal to noise ratio monitoring method using fiber Bragg grating is proposed for monitoring performance of OADM. OSNR of each channel is determined by monitoring the optical power transmitted and reflected from fiber Bragg gratings, simultaneously. We have obtained OSNR with accuracy better than 0.8㏈ compared with OSA of 0.1nm optical resolution in the wide input power range between -6 ㏈m and -23㏈m per channel.
Keywords
파장분할 다중화;광 분기 결합기;광신호 대 잡음비;광섬유 브래그 격자;
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  • Reference
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