High-performance gain-coupled distributed-feedback semiconductor lasers with absorptive gratings

Yi Luo; H. L. Cao; M. Dobashi; H. Hosomatsu; Yoshiaki Nakano; Kunio Tada

doi:10.1117/12.144138

11 May 1993 High-performance gain-coupled distributed-feedback semiconductor lasers with absorptive gratings

Yi Luo, H. L. Cao, M. Dobashi, H. Hosomatsu, Yoshiaki Nakano, Kunio Tada

Author Affiliations +

Proceedings Volume 1979, 1992 International Conference on Lasers and Optoelectronics; (1993) https://doi.org/10.1117/12.144138
Event: 1992 International Conference on Lasers and Optoelectronics, 1992, Bejing, China

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.

Citation Download Citation

Yi Luo, H. L. Cao, M. Dobashi, H. Hosomatsu, Yoshiaki Nakano, and Kunio Tada "High-performance gain-coupled distributed-feedback semiconductor lasers with absorptive gratings", Proc. SPIE 1979, 1992 International Conference on Lasers and Optoelectronics, (11 May 1993); https://doi.org/10.1117/12.144138

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