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Proceedings Paper

External feedback sensitivity of 1.55-um gain-coupled multiquantum well DFB lasers
Author(s): Guo Ping Li; Toshi Makino; Hanh Lu; Jin Hong; Wei-Ping Huang
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Paper Abstract

We present experimental results showing a reduction of relative intensity noise (RIN) in partly gain-coupled InGaAsP/InP multiquantum-well DFB lasers. By comparing with conventional index-coupled lasers, it is found that even a small gain-coupling improves significantly the feedback insensitivity of DFB lasers. The mechanism of the RIN reduction and the less feedback sensitivity are believed to be a combined effect of the high relaxation frequency and heavy damping rate, the stronger internal mode discrimination, the facet reflectivity immunity, and the flatter carrier distribution in the gain-coupling structure.

Paper Details

Date Published: 1 June 1994
PDF: 8 pages
Proc. SPIE 2148, Laser Diode Technology and Applications VI, (1 June 1994); doi: 10.1117/12.176620
Show Author Affiliations
Guo Ping Li, Bell-Northern Research Ltd. (United States)
Toshi Makino, Bell-Northern Research Ltd. (United States)
Hanh Lu, Bell-Northern Research Ltd. (United States)
Jin Hong, Univ. of Waterloo (Canada)
Wei-Ping Huang, Univ. of Waterloo (Canada)

Published in SPIE Proceedings Vol. 2148:
Laser Diode Technology and Applications VI
Pei Chuang Chen; Lawrence A. Johnson; Henryk Temkin, Editor(s)

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