OPTICAL DEVICE AND METHOD FOR MANUFACTURING OPTICAL DEVICE

WIPO Patent Application WO/2019/138821

A1

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.

NAGANO SHIGEHIRO (JP)
MORISHIMA TETSU (JP)

PCT/JP2018/046822

July 18, 2019

December 19, 2018

Click for automatic bibliography generation  

SUMITOMO ELECTRIC INDUSTRIES (JP)

G02B6/13; B23K26/00; B23K26/53

JPH09311237A	1997-12-02
JPH0843650A	1996-02-16
JP2003510656A	2003-03-18
JPH07508358A	1995-09-14
JP2001311847A	2001-11-09

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

HASEGAWA Yoshiki et al. (JP)

View/Download PDF      PDF Help

Previous Patent: TWISTED WIRE CONDUCTOR FOR INSULATED ELECTRICAL WIRE, INSULATED ELECTRICAL WIRE, CORD AND CABLE

Next Patent: ENVIRONMENTAL COMPOSITE SENSOR DEVICE