Tunable laser including parallel lasing cavities with a common output
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United States of America Patent
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Sep 19, 2017
Grant Date -
Sep 22, 2016
app pub date -
Mar 18, 2015
filing date -
Mar 18, 2015
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Abstract
A parallel cavity tunable laser generally includes a semiconductor laser body defining a plurality of parallel laser cavities with a common output. Each of the parallel laser cavities is configured to be driven independently to generate laser light at a wavelength within a different respective wavelength range. The wavelength of the light generated in each of the laser cavities may be tuned, in response to a temperature change, to a channel wavelength within the respective wavelength range. The laser light generated in each selected one of the laser cavities is emitted from the common output at a front facet of the laser body. By selectively generating light in one or more of the laser cavities, one or more channel wavelengths may be selected for lasing and transmission.
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