Title:
OPTICAL COMPONENT MANUFACTURING METHOD, AND OPTICAL COMPONENT
Document Type and Number:
WIPO Patent Application WO/2023/095432
Kind Code:
A1
Abstract:
The present disclosure relates to a manufacturing method, etc., that facilitates control of the width and thickness of an optical waveguide in an optical component. This manufacturing method comprises a preparation step for a glass member, a laser irradiation step for femtosecond laser light, and a light condensing point movement step for a laser light condensing point. The laser light has an energy amount that causes a refractive index change in the glass member, and a flat top-shaped light intensity distribution. The beam irradiation region is defined by the contour of a region of at least 1/e2 of the maximum light intensity. A flat top region is defined by the contour of a region of at least 1/2 of the maximum light intensity, and has an area that is at least 0.45 times the area of the beam irradiation region. The angle formed between the beam irradiation region and a scanning direction is 70-110°, and the angle formed between a plane orthogonal to the thickness direction of the glass member and the scanning direction is 20° or lower.
Inventors:
NAGANO SHIGEHIRO (JP)
SHIOZAKI MANABU (JP)
ARAO HAJIME (JP)
NAKANISHI TETSUYA (JP)
SHIOZAKI MANABU (JP)
ARAO HAJIME (JP)
NAKANISHI TETSUYA (JP)
Application Number:
PCT/JP2022/035509
Publication Date:
June 01, 2023
Filing Date:
September 22, 2022
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
G02B3/00; G02B3/02; G02B3/06; G02B6/13
Domestic Patent References:
| WO2019138821A1 | 2019-07-18 |
Foreign References:
| JP2003279758A | 2003-10-02 | |||
| JP2005205464A | 2005-08-04 | |||
| JP2007079161A | 2007-03-29 | |||
| JP2003255262A | 2003-09-10 | |||
| JP2000305039A | 2000-11-02 | |||
| JP2001311847A | 2001-11-09 | |||
| JPH10332971A | 1998-12-18 | |||
| US20120039560A1 | 2012-02-16 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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