Invention Grant
- Patent Title: Tunable laser and laser transmitter
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Application No.: US16877707Application Date: 2020-05-19
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Publication No.: US11522341B2Publication Date: 2022-12-06
- Inventor: Jialin Zhao , Wei Chen , Li Zeng
- Applicant: HUAWEI TECHNOLOGIES CO., LTD.
- Applicant Address: CN Guangdong
- Assignee: HUAWEI TECHNOLOGIES CO., LTD.
- Current Assignee: HUAWEI TECHNOLOGIES CO., LTD.
- Current Assignee Address: CN Guangdong
- Agency: WHDA, LLP
- Priority: CN201711165899.2 20171121
- Main IPC: H01S5/10
- IPC: H01S5/10 ; H01S5/02 ; H01S5/026 ; H01S5/068 ; H01S5/14 ; H01S5/50 ; H04B10/50 ; H01S5/024 ; H01S3/06

Abstract:
A tunable laser includes a reflective semiconductor optical amplifier (SOA), a grating codirectional coupler, and a reflective microring resonator. The grating codirectional coupler and the reflective microring resonator are both formed on a silicon base. An anti-reflection film is disposed on a first end surface of the reflective SOA, and the first end surface is an end surface, coupled to a first waveguide of the grating codirectional coupler, of the reflective SOA. A second waveguide of the grating codirectional coupler is coupled to the first waveguide, a first grating is disposed on the first waveguide, a second grating disposed opposite to the first grating is disposed on the second waveguide, and the first grating and the second grating constitute a narrow-band pass filter. The second waveguide is connected to the reflective microring resonator.
Public/Granted literature
- US20200280172A1 TUNABLE LASER AND LASER TRANSMITTER Public/Granted day:2020-09-03
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