Title:
ELECTRO-OPTICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/201130
Kind Code:
A1
Abstract:
The invention provides an electro-optical device, comprising: a substrate; an optical waveguide film formed of lithium niobate or tantalum niobate provided in a predetermined region on the substrate; a buffer layer provided adjacent to the optical waveguide film; and an electrode for applying an electric field to the optical waveguide film, and a non-light-transmission optical waveguide film is provided outside the predetermined region. According to the electro-optical device of the present invention, the propagation loss of light can be suppressed.
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Inventors:
NAGASE KENJI (CN)
TAKE HIROSHI (CN)
TAKE HIROSHI (CN)
Application Number:
PCT/JP2021/013931
Publication Date:
October 07, 2021
Filing Date:
March 31, 2021
Export Citation:
Assignee:
TDK CORP (JP)
International Classes:
G02F1/03; G02F1/035
Foreign References:
| JP2014006348A | 2014-01-16 | |||
| JPH1048445A | 1998-02-20 | |||
| US20020159690A1 | 2002-10-31 | |||
| EP0738907A1 | 1996-10-23 | |||
| US20040028334A1 | 2004-02-12 |
Attorney, Agent or Firm:
ITO, Takako (JP)
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