DISTRIBUTED FEEDBACK LASER
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United States of America Patent
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May 16, 2017
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Jun 24, 2015
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Abstract
A distributed feedback laser, including: an output end including an active region including a grating including a λ/4 phase-shift region; and a non-output end including a reflecting region including a grating with uniform period. The length of the active region is smaller than or equal to 200 μm. The end facet of the output end of the laser is coated with an anti-reflection film.
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