Invention Grant
- Patent Title: Optical coupling device
- Patent Title (中): 光耦合装置
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Application No.: US12182591Application Date: 2008-07-30
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Publication No.: US07899286B2Publication Date: 2011-03-01
- Inventor: Haruhiko Yoshida
- Applicant: Haruhiko Yoshida
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Ohlandt, Greeley, Ruggiero & Perle, L.L.P.
- Priority: JP2007-199454 20070731
- Main IPC: G02B6/26
- IPC: G02B6/26 ; G02B6/42

Abstract:
An optical coupling device for coupling an optical signal propagating in an optical fiber or space to an optical waveguide includes a lower cladding layer formed on a substrate, an optical waveguide formed on the lower cladding layer such that the tip of the optical waveguide points to an end portion of the lower cladding layer, and having a tapered distal end portion, and an upper cladding layer continuously formed on the lower cladding layer and on the distal end portion of the optical waveguide from the end portion of the lower cladding layer to the distal end portion of the optical waveguide, and having a refractive index higher than that of the lower cladding layer. The upper cladding layer draws light having entered the end portion of the lower cladding layer toward the upper cladding layer, and couples the light to the distal end portion of the optical waveguide.
Public/Granted literature
- US20090087144A1 OPTICAL COUPLING DEVICE Public/Granted day:2009-04-02
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