Title:
OPTICAL CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2020/245923
Kind Code:
A1
Abstract:
Conventionally, production errors occur even when an RGB coupler has been appropriately designed and, as a result, the designed function has been difficult to achieve with good yield. In order to address this issue, an optical circuit is provided that has a first waveguide path along which a zero-order mode light is guided and a second waveguide path that is wider than the first waveguide path and along which first-order mode light is guided. The optical circuit is characterized by: the first and second waveguide paths retaining a combination of waveguide path widths that satisfy mode conversion conditions; and by including at least a first curved section having a curved shape that curves towards the first waveguide path side.
Inventors:
SAKAMOTO JUNJI (JP)
INABA TOMOHIRO (JP)
HASHIMOTO TOSHIKAZU (JP)
INABA TOMOHIRO (JP)
HASHIMOTO TOSHIKAZU (JP)
Application Number:
PCT/JP2019/022210
Publication Date:
December 10, 2020
Filing Date:
June 04, 2019
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G02B6/12; G02B6/14
Domestic Patent References:
| WO2017142076A1 | 2017-08-24 | |||
| WO2017065225A1 | 2017-04-20 |
Foreign References:
| JP2015230464A | 2015-12-21 | |||
| US20170227711A1 | 2017-08-10 | |||
| JP2015230465A | 2015-12-21 | |||
| JP2006276857A | 2006-10-12 |
Attorney, Agent or Firm:
TANI & ABE, P.C. (JP)
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