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Corrugation-pitch-modulated phase-shifted DFB laser

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4 Author(s)
Okai, M. ; Hitachi Ltd., Tokyo, Japan ; Chinone, N. ; Taira, H. ; Harada, T.

A corrugation-pitch-modulated phase-shifted distributed feedback (DFB) laser is proposed to reduce the spatial-hole-burning effect along the laser cavity. The structure of the proposed corrugation-pitch-modulated phase-shifted DFB laser is illustrated. A reduction in this effect is confirmed from its spectral behavior as a function of driving current. Consequently, stable single-longitudinal-mode operation up to high-output powers is obtained.<>

Published in:

Photonics Technology Letters, IEEE  (Volume:1 ,  Issue: 8 )

Date of Publication:

Aug. 1989

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