Title:
OPTICAL WAVEGUIDE ELEMENT
Document Type and Number:
WIPO Patent Application WO/2021/065624
Kind Code:
A1
Abstract:
Provided is an optical waveguide element that prevents leaked light generated at a forking section from entering a downstream optical waveguide such as another forking section, thereby affording minimal degradation of optical characteristics. The optical waveguide is characterized in that: at least one of two fork waveguides (20a, 20b) forking from a first forking section (20) comprises a second forking section (21, 22); slab waveguides (3c-1 to 3c-3) are formed between the two fork waveguides; and between the first forking section and the second forking section, slits (41, 42) are formed that partition the slab waveguides into a first slab waveguide area (3c-1) close to the first forking section and second slab waveguide areas (3c-2, 3c-3) close to the second forking section(s).
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Inventors:
KATAOKA YUU (JP)
MIYAZAKI NORIKAZU (JP)
MIYAZAKI NORIKAZU (JP)
Application Number:
PCT/JP2020/035813
Publication Date:
April 08, 2021
Filing Date:
September 23, 2020
Export Citation:
Assignee:
SUMITOMO OSAKA CEMENT CO LTD (JP)
International Classes:
G02F1/01; G02B6/12; G02B6/122; G02B6/125
Foreign References:
| JP2006178252A | 2006-07-06 | |||
| JP2004093905A | 2004-03-25 | |||
| JPH095548A | 1997-01-10 | |||
| JP2002023123A | 2002-01-23 | |||
| JP2011075906A | 2011-04-14 | |||
| US20100046964A1 | 2010-02-25 |
Attorney, Agent or Firm:
TAMURA Chikashi et al. (JP)
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