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Conferences > OFC > 1985 > TUP > TUP1

Analysis of the spectral linewidth of distributed feedback laser diodes

Keisuke Kojima, Kazuo Kyuma, and Takashi Nakayama

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Abstract

Laser diodes with spectral linewidths as narrow as 500 kHz are required in coherent optical communication systems. 1 In this paper, we present a theoretical analysis of the spectral linewidth of distributed feedback (DFB) lasers for the first time. The numerical calculations show that DFB lasers with long cavities have an extremely narrow spectral linewidth as compared with conventional Fabry-Perot lasers.

© 1985 Optical Society of America

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