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Proceedings Paper

Characterization and reducing method of optical feedback of DFB laser module in CATV systems
Author(s): Xin Wang; KaiDe Zha; Chaojiong Wei; Lin Cai; BingKun Zhou
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Paper 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.

Paper Details

Date Published: 20 September 1996
PDF: 6 pages
Proc. SPIE 2893, Fiber Optic Components and Optical Communication, (20 September 1996); doi: 10.1117/12.252011
Show Author Affiliations
Xin Wang, Tsinghua Univ. (China)
KaiDe Zha, Tsinghua Univ. (China)
Chaojiong Wei, Tsinghua Univ. (China)
Lin Cai, Tsinghua Univ. (China)
BingKun Zhou, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 2893:
Fiber Optic Components and Optical Communication
Kam Tai Chan; Shuisheng Jian; Franklin F. Tong, Editor(s)

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