Semiconductor laser with heater
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United States of America Patent
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Jun 5, 2012
Grant Date -
Feb 18, 2010
app pub date -
Oct 1, 2009
filing date -
Mar 30, 2006
priority date (Note) -
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Abstract
An optical semiconductor device has a semiconductor substrate, a semiconductor region and heater. The semiconductor region has a stripe shape demarcated with a top face and a side face thereof. The stripe shape has a width smaller than a width of the semiconductor substrate. An optical waveguide layer is located in the semiconductor region. A distance from a lower end of the side face of the semiconductor region to the optical waveguide layer is more than half of the width of the semiconductor region. The heater is provided above the optical waveguide layer.
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