Invention Grant
US08358460B2 Quasi-phase matched optical waveguide for preventing back conversion
有权
准相位匹配光波导，用于防止反向转换
- Patent Title: Quasi-phase matched optical waveguide for preventing back conversion
- Patent Title (中): 准相位匹配光波导，用于防止反向转换
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Application No.: US12759179Application Date: 2010-04-13
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Publication No.: US08358460B2Publication Date: 2013-01-22
- Inventor: Shih-Chiang Lin , Nai-Hsiang Sun , Po-Jui Chiang
- Applicant: Shih-Chiang Lin , Nai-Hsiang Sun , Po-Jui Chiang
- Applicant Address: TW Dashu Township, Kaohsiung County
- Assignee: I Shou University
- Current Assignee: I Shou University
- Current Assignee Address: TW Dashu Township, Kaohsiung County
- Agency: Kilpatrick Townsend & Stockton LLP
- Main IPC: G02F1/35
- IPC: G02F1/35 ; H01S3/10
Abstract:
A QPM waveguide includes an optical substrate having periodic domain-inverted regions and non-inverted regions which are arranged alternately, and a waveguide part passing through the domain-inverted regions and non-inverted regions. The substrate is divided into at least two sections each of which has a wave input facet and a wave output facet. At least one band-pass filter layer is disposed on the wave input facet of one section to filter out a signal wave for preventing back conversion so that the energy of the conversion wave can increase. A method for preventing the back conversion is also disclosed.
Public/Granted literature
- US20110249317A1 Quasi-Phase Matched Optical Waveguide for Preventing Back Conversion Public/Granted day:2011-10-13
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