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Characteristics of linewidth narrowing of a 1.5 ¿m DFB laser with a short GRIN-rod external coupled cavity

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3 Author(s)
T. P. Lee ; Bell Communications Research, Murray Hill, USA ; S. G. Menocal ; H. Matsumura

A short GRIN-rod is coupled to a 1.5 ¿m InGaAsP DFB laser to achieve a linewidth reduction from 34 MHz to 1.5 MHz at 2.5 mW. Characteristics of linewidth narrowing with respect to the displacement of the GRIN-rod, the laser temperature and the driving current are presented.

Published in:

Electronics Letters  (Volume:21 ,  Issue: 15 )