Invention Grant
- Patent Title: Optical waveguide, optical modulator and optical coupler
- Patent Title (中): 光波导,光调制器和光耦合器
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Application No.: US13037463Application Date: 2011-03-01
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Publication No.: US08824836B2Publication Date: 2014-09-02
- Inventor: Masaki Sugiyama
- Applicant: Masaki Sugiyama
- Applicant Address: JP Kawasaki
- Assignee: Fujitsu Optical Components Limited
- Current Assignee: Fujitsu Optical Components Limited
- Current Assignee Address: JP Kawasaki
- Agency: Staas & Halsey LLP
- Priority: JP2010-132932 20100610
- Main IPC: G02F1/035
- IPC: G02F1/035 ; G02B6/26 ; G02F1/313 ; G02F1/225

Abstract:
An optical waveguide formed in a substrate including: a curved waveguide; and a splitter that is coupled to the curved waveguide and branches, wherein a low refraction index portion having an effective refraction index that is lower than that of a start point of the curved waveguide on an opposite side of the splitter is provided in a waveguide extending from the start point of the curved waveguide to the splitter.
Public/Granted literature
- US20110305412A1 OPTICAL WAVEGUIDE, OPTICAL MODULATOR AND OPTICAL COUPLER Public/Granted day:2011-12-15
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