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Patent Searching and Data


Title:
OPTICAL DEVICE AND METHOD FOR MANUFACTURING OPTICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/138821
Kind Code:
A1
Abstract:
A method for manufacturing an optical device according to an embodiment comprises: a hydrogen injection step of injecting hydrogen into a glass member containing Ge; a laser irradiation step of concentrating laser light from a femtosecond laser into the glass member with hydrogen injected therein, the laser light having an amount of energy causing a light-induced change in the refractive index of the glass member while having a repetition frequency of 10 kHz or greater; and a light-condensing position moving step of moving the light-condensing position of the laser light relative to the glass member. The laser irradiation step and the light-condensing position moving step are repeated to thereby create a continuous variable-refractive-index region inside the glass member.

Inventors:
NAGANO Shigehiro (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
MORISHIMA Tetsu (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
Application Number:
JP2018/046822
Publication Date:
July 18, 2019
Filing Date:
December 19, 2018
Export Citation:
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Assignee:
SUMITOMO ELECTRIC INDUSTRIES, LTD. (5-33, Kitahama 4-chome Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
International Classes:
G02B6/13; B23K26/00; B23K26/53
Foreign References:
JPH09311237A1997-12-02
JPH0843650A1996-02-16
JP2003510656A2003-03-18
JPH07508358A1995-09-14
JP2001311847A2001-11-09
Other References:
LEMAIRE, P. J. ET AL.: "High pressure H2 loading as a technique for achieving ultrahigh UV photosensitivity and thermal sensitivity in Ge02 doped optical fibres", ELECTRONICS LETTERS, vol. 29, no. 13, 24 June 1993 (1993-06-24), pages 1191 - 1193, XP000374245
WILLIAMS, D. L. ET AL.: "Enhanced UV photosensitivity in boron codoped germanosilicate fibres", ELECTRONICS LETTERS, vol. 29, no. 1, 7 January 1993 (1993-01-07), pages 45 - 47, XP000403909
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (SOEI PATENT AND LAW FIRM, Marunouchi MY PLAZA 9th fl. 1-1, Marunouchi 2-chome, Chiyoda-k, Tokyo 05, 〒1000005, JP)
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