IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
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A wavelength-tunable short-cavity DBR laser with active distributed Bragg reflector
Hideo ArimotoHiroshi SatoTakeshi KitataniTomonobu TsuchiyaKazunori ShinodaAki TakeiHiroyuki UchiyamaMasahiro AokiShinji Tsuji
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2005 Volume 2 Issue 5 Pages 170-175

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Abstract

The incorporation of an active single-quantum well in the tuning layer of a DBR laser is proposed as a way of compensating for optical loss and achieving stable single-mode operation during wavelength tuning. Experimental results demonstrate that the structure achieves these goals while maintaining the efficiency of tuning. In application to a short-cavity DBR laser with a gain region 35-µm long, continuous wavelength gtuning over a broad 4.8nm is achieved with stable lasing properties (more than 40dB of side-mode suppression). Fast wavelength switching less than 10ns to cross a wavelength spacing of 2nm is also confirmed.

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© 2005 by The Institute of Electronics, Information and Communication Engineers
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