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Title:
OPTICAL WAVEGUIDE ELEMENT, OPTICAL MODULATION DEVICE USING THE SAME, AND OPTICAL TRANSMITTER
Document Type and Number:
WIPO Patent Application WO/2022/138699
Kind Code:
A1
Abstract:
Provided is an optical waveguide element having an SSC structure that, while being reduced in size, is capable of suppressing insertion loss related to coupling with an optical fiber etc. and has high light resistance, heat resistance, or production efficiency. The optical waveguide element comprising: an optical waveguide substrate 1 having a rib-type optical waveguide 10 formed of a material having an electro-optical effect; and a holding member 2 that is arranged and fixed in superposition on the optical waveguide substrate at a position where an input end or an output end of the rib-type optical waveguide is formed is characterized in that another optical waveguide 20 having a mode field diameter larger than that of the rib-type optical waveguide is formed on the surface of the holding member facing the rib-type optical waveguide, and the optical waveguide substrate and the holding member are joined by an adhesive layer 30.

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Inventors:
KUGIMOTO YUKI (JP)
KATAOKA YU (JP)
TAKANO SHINGO (JP)
Application Number:
PCT/JP2021/047501
Publication Date:
June 30, 2022
Filing Date:
December 22, 2021
Export Citation:
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Assignee:
SUMITOMO OSAKA CEMENT CO LTD (JP)
International Classes:
G02F1/035; G02B6/30
Domestic Patent References:
WO2018047683A12018-03-15
WO2008114624A12008-09-25
Foreign References:
JP2010230741A2010-10-14
JP2002122750A2002-04-26
JP2019095698A2019-06-20
JP2016014766A2016-01-28
US20170343734A12017-11-30
JP2006284961A2006-10-19
Attorney, Agent or Firm:
TAMURA Chikashi et al. (JP)
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