Title:
DEVICE FOR COUPLING WAVEGUIDE AND OPTICAL FIBER, QUANTUM LIGHT CIRCUIT THAT USES SAME, AND METHOD FOR MANUFACTURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/069887
Kind Code:
A1
Abstract:
Provided is a device with which the reliability of the coupling of a waveguide and an optical fiber is improved. This device comprises: a waveguide chip (10) that has a cladding layer (12) and an optical waveguide (13) formed on the cladding layer (12); and an optical fiber (20) optically connected to the optical waveguide (13), wherein the cladding layer (12) has a hollow space (15) below a coupling region (C) where the optical waveguide (13) is optically connected to the optical fiber (20), and the optical waveguide (13) is in contact with the optical fiber (20) in the coupling region (C) and bends in the stacking direction of the waveguide chip (10) inside the hollow space (15).
Inventors:
IWAI TOSHIKI (JP)
Application Number:
PCT/JP2022/036554
Publication Date:
April 04, 2024
Filing Date:
September 29, 2022
Export Citation:
Assignee:
FUJITSU LTD (JP)
International Classes:
G02B6/30; G02F3/00
Domestic Patent References:
| WO2016063786A1 | 2016-04-28 | |||
| WO2011078789A1 | 2011-06-30 |
Foreign References:
| US20210117845A1 | 2021-04-22 | |||
| US20160103279A1 | 2016-04-14 | |||
| JP2016212415A | 2016-12-15 | |||
| KR102315387B1 | 2021-10-20 |
Other References:
WANG PENG; MICHAEL ARON; KWOK CHEE YEE: "Cantilever Inverse Taper Coupler With SiO2 Gap for Submicrometer Silicon Waveguides", IEEE PHOTONICS TECHNOLOGY LETTERS, IEEE, USA, vol. 29, no. 16, 15 August 2017 (2017-08-15), USA, pages 1407 - 1410, XP011657441, ISSN: 1041-1135, DOI: 10.1109/LPT.2017.2723901
BURRIDGE BEN M., VILLARREAL-GARCIA GERARDO E., GENTILE ANTONIO A., JIANG PISU, BARRETO JORGE: "Zero-Power Calibration of Photonic Circuits at Cryogenic Temperatures", ACS PHOTONICS, vol. 8, no. 9, 15 September 2021 (2021-09-15), pages 2683 - 2691, XP093151512, ISSN: 2330-4022, DOI: 10.1021/acsphotonics.1c00714
BURRIDGE BEN M., VILLARREAL-GARCIA GERARDO E., GENTILE ANTONIO A., JIANG PISU, BARRETO JORGE: "Zero-Power Calibration of Photonic Circuits at Cryogenic Temperatures", ACS PHOTONICS, vol. 8, no. 9, 15 September 2021 (2021-09-15), pages 2683 - 2691, XP093151512, ISSN: 2330-4022, DOI: 10.1021/acsphotonics.1c00714
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
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