Invention Grant
- Patent Title: Optical isolator
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Application No.: US16094147Application Date: 2017-03-31
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Publication No.: US11409144B2Publication Date: 2022-08-09
- Inventor: Toshiaki Watanabe
- Applicant: SHIN-ETSU CHEMICAL CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: SHIN-ETSU CHEMICAL CO., LTD.
- Current Assignee: SHIN-ETSU CHEMICAL CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JPJP2016-087688 20160426
- International Application: PCT/JP2017/013558 WO 20170331
- International Announcement: WO2017/187886 WO 20171102
- Main IPC: G02F1/09
- IPC: G02F1/09 ; G02B27/28

Abstract:
An optical isolator includes: an optical isolator chip in which a first polarizer, a Faraday rotator made of a ferromagnet, and a second polarizer are bonded and fixed in this order; and a magnet for applying a magnetic field to the optical isolator chip. A light-entering end surface or a light-exiting end surface of the optical isolator chip is bonded and fixed to a component. On an optical axis of the optical isolator, a center of a magnetic flux formed by the magnet is positioned closer to the end surface side bonded and fixed to the component than a central position of the Faraday rotator on the optical axis. The optical isolator has high bonding reliability to the component.
Public/Granted literature
- US20190243168A1 OPTICAL ISOLATOR Public/Granted day:2019-08-08
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