IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
LETTER
Enhanced modulation bandwidth of surface-emitting laser with external optical feedback
Tomoaki OtaTakeshi UchidaTakashi KondoFumio Koyama
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2004 Volume 1 Issue 13 Pages 368-372

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Abstract

We propose a monolithic external-cavity vertical-cavity surface emitting laser (VCSEL) for achieving ultra-high speed direct modulation beyond the limit of a relaxation oscillation frequency. We present the modeling of small-signal and large signal modulation characteristics of VCSELs with optical feedback. It is predicted that a 3 dB-modulation bandwidth can be increased by 50% with optimizing an external cavity length. Also, better eye opening can be expected in 40Gbps direct modulation.

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© 2004 by The Institute of Electronics, Information and Communication Engineers
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