Invention Grant
- Patent Title: Optical switch
- Patent Title (中): 光开关
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Application No.: US13140965Application Date: 2009-12-16
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Publication No.: US08422110B2Publication Date: 2013-04-16
- Inventor: Masahiko Ohta , Osamu Ishibashi , Fujio Okumura
- Applicant: Masahiko Ohta , Osamu Ishibashi , Fujio Okumura
- Applicant Address: JP Tokyo
- Assignee: NEC Corporation
- Current Assignee: NEC Corporation
- Current Assignee Address: JP Tokyo
- Agency: Young & Thompson
- Priority: JP2008-322727 20081218; JP2008-322734 20081218; JP2008-322735 20081218
- International Application: PCT/JP2009/070948 WO 20091216
- International Announcement: WO2010/071141 WO 20100624
- Main IPC: G02F1/03
- IPC: G02F1/03

Abstract:
An optical switch changes the refractive index of an electro-optical crystal according to an electric field applied to the electro-optical crystal so as to switch depending on whether the electro-optical crystal enables incident light to pass through or whether the electro-optical crystal enables incident light to be totally reflected. The optical switch includes an electrode section including a plurality of electrodes and formed in the electro-optical crystal, a principal plane including the largest area of each electrode on a same plane of the electro-optical crystal; an insulator layer on at least one plane of the electro-optical crystal, the plane being parallel with the electrode section, the insulator layer made of an insulator with lower dielectric constant than the electro-optical crystal; and a temperature control device formed on and in contact with the insulator layer and controls a temperature of the electrode section or dissipates heat generated in the electrode section.
Public/Granted literature
- US20110255148A1 OPTICAL SWITCH Public/Granted day:2011-10-20
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