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Proceedings Paper

High-performance gain-coupled distributed-feedback semiconductor lasers with absorptive gratings
Author(s): Yi Luo; H. L. Cao; M. Dobashi; H. Hosomatsu; Yoshiaki Nakano; Kunio Tada
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Paper Abstract

Improved characteristics of gain-coupled distributed feedback (DFB) semiconductor lasers are obtained by optimizing the duty cycle of the absorptive grating and using an absorptive conduction-type-inverted grating. Low threshold current cw operation is achieved at 10 mA lower than lasers without conduction-type-inverting. Furthermore, improved linear oscillation and a narrow linewidth are demonstrated. For gain-coupled DFB semiconductor lasers based on absorptive gratings, ultralow chirping operation under gain switching conditions is obtained for the first time.

Paper Details

Date Published: 11 May 1993
PDF: 12 pages
Proc. SPIE 1979, 1992 International Conference on Lasers and Optoelectronics, (11 May 1993); doi: 10.1117/12.144138
Show Author Affiliations
Yi Luo, Tsinghua Univ. (China)
H. L. Cao, Univ. of Tokyo (Japan)
M. Dobashi, Optical Measurement Technology Development Co., Ltd (Japan)
H. Hosomatsu, Optical Measurement Technology Development Co., Ltd (Japan)
Yoshiaki Nakano, Univ. of Tokyo (Japan)
Kunio Tada, Univ. of Tokyo (Japan)


Published in SPIE Proceedings Vol. 1979:
1992 International Conference on Lasers and Optoelectronics

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