A high sensitive wavelength stability monitoring method using 90° optical hybrid

摘要：

Coherent detection is a new attractive detection method in optical transmission, especially in high capacity long-haul fiber communication systems. Most coherent detection systems use a local laser as the local oscillator rather than using an optical phase-locked loop (OPLL). In this case, the signal and local laser’s wavelength must be as close as possible, and both should be stable. Wavelength stability of DFB laser is a critical factor for optical coherent detection and other applications. We use fiber couplers and a fiber phase shifter to buildup an optical 90o optical hybrid, by which the wavelength fluctuation is monitored with a very high sensitivity.

关键词： Wavelength monitoring Coherent detection High sensitivity

作者: Yong Feng He Wen Hanyi Zhang Xiaoping Zheng

作者单位: Department of Electronic Engineering,Tsinghua University,Beijing 100084,P.R.China

会议类型: 国际会议

会议名称: 2008亚太光通信会议(Asia-Pacific Optical Communications 2008)

会议地点: 杭州

会议语种:英文

在线出版日期: 2008-10-26（万方平台首次上网日期，不代表论文的发表时间）