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On the performance of DFB laser structures specially designed for directly-modulated optical communication systems

Boavida, J.M. ; Fernandes, C. F. ; Morgado, J.

Progress In Electromagnetics Research - PIER Vol. 6, Nº 1, pp. 96 - 100, January, 2010.

ISSN (print): 1559-8985
ISSN (online): 1559-8985

Journal Impact Factor: 4,735 (in 2008)

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We propose and analyze two easily manufacturable optimized DFB laser structures that are suitable for directly-modulated optical communication systems. These structures present high power efficiency, a good immunity to spatial hole burning and high yield. The first DFB laser structure is extremely simple to fabricate whereas the second DFB laser structure has an enhanced performance at the expense of the inclusion of a slightly more complicated grating. Previously, in order to achieve a similar performance, hardly manufacturable lasers have been proposed elsewhere.