Linewidth Enhancement Factor of Distributed Reflector (DR) DSM Laser

Isao ARIMA  Kazuhiro KOMORI  Shigehisa ARAI  Yasuharu SUEMATSU  

IEICE TRANSACTIONS (1976-1990)   Vol.E73   No.12   pp.2014-2016
Publication Date: 1990/12/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: LETTER
Category: Quantum Electronics

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A new way to reduce the linewidth enhancement factor of Distributed Reflector dynamic-single-mode (DR-DSM) lasers is proposed, which is detuning of lasing wavelength from the Bragg wavelength. The linewidth enhancement factor αof DR-DSM laser was found to be reduced to half of medium defined value αmedium when the phase shift value between the active and the passive distributed reflectors is 0.25π.