Invention Grant
- Patent Title: Optical switch and manufacturing method thereof
- Patent Title (中): 光开关及其制造方法
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Application No.: US12919465Application Date: 2009-01-26
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Publication No.: US08478088B2Publication Date: 2013-07-02
- Inventor: Masatoshi Tokushima
- Applicant: Masatoshi Tokushima
- Applicant Address: JP Tokyo
- Assignee: NEC Corporation
- Current Assignee: NEC Corporation
- Current Assignee Address: JP Tokyo
- Priority: JP2008-057932 20080307; JP2008-208926 20080814
- International Application: PCT/JP2009/051201 WO 20090126
- International Announcement: WO2009/110262 WO 20090911
- Main IPC: G02B6/26
- IPC: G02B6/26
Abstract:
The object is to provide an optical switch capable of efficient operation and a manufacturing method thereof. The optical switch according to the present invention is a Mach-Zehnder interferometer type optical switch composed of a line defect waveguide of a photonic crystal. Further, the optical switch according to the present invention includes two directional couplers 20 and 23, and two paths of waveguides 30 and 32 therebetween. Furthermore, between the two paths, group velocity of guided light differs in the first path waveguide 20 and the second path waveguide 32.
Public/Granted literature
- US20110008000A1 OPTICAL SWITCH AND MANUFACTURING METHOD THEREOF Public/Granted day:2011-01-13
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