DBR laser with improved thermal tuning efficiency
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United States of America Patent
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Jul 20, 2010
Grant Date -
Feb 12, 2009
app pub date -
Apr 14, 2008
filing date -
Apr 13, 2007
priority date (Note) -
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Abstract
A distributed Bragg reflector (DBR) includes a base substrate and a gain medium formed on the base substrate. A waveguide positioned above the base substrate in optical communication with the gain medium and defines a gap extending between the base substrate and the waveguide along a substantial portion of the length thereof. The waveguide having a grating formed therein. A heating element is in thermal contact with the waveguide and electrically coupled to a controller electrically configured to adjust optical properties of the waveguide by controlling power supplied to the heating element.
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