Semiconductor optical element, semiconductor laser using the semiconductor optical element, and optical transponder using the semiconductor laser
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United States of America Patent
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May 22, 2012
Grant Date -
Jun 17, 2010
app pub date -
Oct 9, 2007
filing date -
Oct 31, 2006
priority date (Note) -
Expired
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Abstract
A semiconductor optical element includes an n-type substrate, an n-type clad layer formed upward of the n-type substrate, a p-type clad layer formed upward of the n-type substrate, a guide layer, formed between the p-type clad layer and the n-type clad layer, for waveguiding a light, first and second electrodes respectively formed on the bottom surface of the n-type substrate and the upper surface of the p-type clad layer, and a plurality of electric current regulating members provided in the vicinity of the guide layer and regularly arranged along a light waveguide direction in the guide layer. The plurality of electric current regulating members generate an even distribution of a refractive index in the guide layer along the light waveguide direction in the guide layer. The guide layer reflects light with a wavelength which is determined in accordance with the even refractive index distribution.
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