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

Yong Feng; He Wen; Hanyi Zhang; Xiaoping Zheng

doi:10.1117/12.803992

11 November 2008 A high sensitive wavelength stability monitoring method using 90° optical hybrid

Yong Feng, He Wen, Hanyi Zhang, Xiaoping Zheng

Proceedings Volume 7136, Optical Transmission, Switching, and Subsystems VI; 71360V (2008) https://doi.org/10.1117/12.803992
Event: Asia-Pacific Optical Communications, 2008, Hangzhou, China

Abstract

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.

Citation Download Citation

Yong Feng, He Wen, Hanyi Zhang, and Xiaoping Zheng "A high sensitive wavelength stability monitoring method using 90° optical hybrid", Proc. SPIE 7136, Optical Transmission, Switching, and Subsystems VI, 71360V (11 November 2008); https://doi.org/10.1117/12.803992

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