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US 2017/0256905 A1Published application
Distributed feedback laser
AssigneesWeihua GUO, Huazhong University of Science and Technology
InventorsWeihua GUO, Gongyuan ZHAO, Qiaoyin LU
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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.
Claims13
A distributed feedback laser, comprising:
- an output end comprising an active region, the active region comprising a first grating, and the first grating comprising a λ/4 phase-shift region;
- and
- a non-output end comprising a reflecting region, the reflecting region comprising a second grating having a uniform period;
- wherein
- a length of the active region is smaller than or equal to 200 μm;
- and
- an end facet of the output end of the laser is coated with an anti-reflection film.
4 more elements
Dependencies are inferred from the claim text.