Characterization and reducing method of optical feedback of DFB laser module in CATV systems

Xin Wang; KaiDe Zha; Chaojiong Wei; Lin Cai; BingKun Zhou

doi:10.1117/12.252011

20 September 1996 Characterization and reducing method of optical feedback of DFB laser module in CATV systems

Xin Wang, KaiDe Zha, Chaojiong Wei, Lin Cai, BingKun Zhou

Proceedings Volume 2893, Fiber Optic Components and Optical Communication; (1996) https://doi.org/10.1117/12.252011
Event: Photonics China '96, 1996, Beijing, China

Abstract

In this paper, the effects of a reflected laser beam on DFB laser intensity noise and nonlinear characteristics are investigated. It is shown that reflected power increases the intensity noise to 5 or more decibels over the intrinsic laser noise level. The undulation of light output versus current (L-I curves) result from the optical feedback is discussed. The nonlinearity impairments induced by moderate levels of optical feedback is not as severe as evaluated by static L-I curves. Some effective methods to reduce the optical reflection are put forward.

Citation Download Citation

Xin Wang, KaiDe Zha, Chaojiong Wei, Lin Cai, and BingKun Zhou "Characterization and reducing method of optical feedback of DFB laser module in CATV systems", Proc. SPIE 2893, Fiber Optic Components and Optical Communication, (20 September 1996); https://doi.org/10.1117/12.252011

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