Title:
OPTICAL CIRCUIT AND METHOD FOR PRODUCING OPTICAL CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2024/089892
Kind Code:
A1
Abstract:
An optical circuit according to the present disclosure comprises, in the end face of a waveguide of the optical circuit, an opening (6) of a light-shielding film (4) in a region including the cross-section of a core (3). Additionally, the optical circuit comprises a gas barrier film (5) that covers the top face and end face of a chip (50) of the optical circuit. As a result of the gas barrier film (5) covering the end face of the chip (50), it is possible to prevent the shape of emitted light from deteriorating due to moisture absorption. The light-shielding film (4) is capable of removing stray light originating from inside the chip (50). The present invention presents a novel structure for the chip (50) end face in optical circuits such as PLCs. Also disclosed is a novel method for producing an optical circuit utilizing a self-written waveguide.
Inventors:
FUJIWARA YUJI (JP)
KATAYOSE SATOMI (JP)
KATAYOSE SATOMI (JP)
Application Number:
PCT/JP2022/040490
Publication Date:
May 02, 2024
Filing Date:
October 28, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G02B6/122; G02B6/13
Domestic Patent References:
| WO2021005723A1 | 2021-01-14 | |||
| WO2008157469A1 | 2008-12-24 |
Foreign References:
| JP2021039241A | 2021-03-11 | |||
| JP2014002282A | 2014-01-09 | |||
| JP2001350043A | 2001-12-21 | |||
| JP2004295118A | 2004-10-21 | |||
| JP2003131064A | 2003-05-08 |
Attorney, Agent or Firm:
TANI & ABE, P.C. (JP)
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