IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
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Sub-harmonic mode-locking of VCSEL with a concave external mirror
Tomoyuki KatoAkihiro MatsutaniTakahiro SakaguchiKohroh Kobayashi
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2008 Volume 5 Issue 4 Pages 152-156

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Abstract

We designed a composite resonator VCSEL using a VCSEL chip and a concave external mirror for mode-locking to produce optical clock signals and demonstrated the operation experimentally. A very low threshold current was successfully realized by using a proper reflectivity of VCSEL and the external mirror and by achieving efficient feedback using a concave external mirror. Using a concave mirror with the curvature radius of 14.12mm, sub-harmonic active mode-locking was achieved at a repetition rate of 10.56GHz, which corresponded to the external cavity length.

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© 2008 by The Institute of Electronics, Information and Communication Engineers
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