Invention Grant
US08811447B2 Semiconductor laser with varied-width waveguide and semiconductor laser module including the same
有权
具有不同宽度波导的半导体激光器和包括其的半导体激光器模块
- Patent Title: Semiconductor laser with varied-width waveguide and semiconductor laser module including the same
- Patent Title (中): 具有不同宽度波导的半导体激光器和包括其的半导体激光器模块
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Application No.: US13030536Application Date: 2011-02-18
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Publication No.: US08811447B2Publication Date: 2014-08-19
- Inventor: Yutaka Ohki , Satoshi Arakawa , Shunsuke Okuyama , Masaki Funabashi
- Applicant: Yutaka Ohki , Satoshi Arakawa , Shunsuke Okuyama , Masaki Funabashi
- Applicant Address: JP Tokyo
- Assignee: Furukawa Electric Co., Ltd.
- Current Assignee: Furukawa Electric Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Lowe Hauptman & Ham, LLP
- Priority: JP2010-035333 20100219
- Main IPC: H01S3/063
- IPC: H01S3/063 ; H01S3/13
Abstract:
A semiconductor laser outputs a laser light from an output facet of a waveguide having an index waveguide structure, via a lens system. The waveguide includes, in order from a rear facet opposite to the output facet, a first narrow portion, a wide portion that is wider than the first narrow portion, a second narrow portion narrower than the wide portion, a first tapered portion formed between the first narrow portion and the wide portion, which expands toward the wide portion, and a second tapered portion formed between the wide portion and the second narrow portion, which narrows toward the second narrow portion. Each of the first narrow portion, the wide portion, and the second narrow potion has a uniform width.
Public/Granted literature
- US20110206082A1 SEMICONDUCTOR LASER AND SEMICONDUCTOR LASER MODULE Public/Granted day:2011-08-25
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