IEEJ Transactions on Electronics, Information and Systems
Online ISSN : 1348-8155
Print ISSN : 0385-4221
ISSN-L : 0385-4221
Analysis of single mode laser with chirped gratings
Tomohiro TakahashiNorikatsu Yamauchi
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1998 Volume 118 Issue 1 Pages 15-20

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Abstract

Using the wavetheoretical analysis, this paper investigates the lasing characteristics of three sectioned single-mode DFB semiconductor lasers with chirped gratings. Analytical expressions are derived for the threshold gain and lasing wavelength of chirped DFB lasers. Numerical results show the sectioned chirped gratings have significant effects on the fine tuning of lasing wavelength and the improvement of the singlemode gain margin to the DFB lasers.

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