Title:
CLADDING MODE LIGHT REMOVAL STRUCTURE, LASER DEVICE, AND METHOD FOR MANUFACTURING CLADDING MODE LIGHT REMOVAL STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2020/045569
Kind Code:
A1
Abstract:
Provided is a cladding mode light removal structure capable of removing cladding mode light while suppressing local heating due to cladding mode light in an inexpensive manner. This cladding mode light removal structure 1 is used to remove cladding mode light propagating inside a cladding 14 of an optical fiber 10. The cladding mode light removal structure 1 comprises: a fiber-holding portion 20 for holding an optical fiber 10; an exposed cladding portion 16 wherein the entire periphery of a cladding 14 is exposed from a cover material 12 for a prescribed length along the lengthwise direction of the optical fiber 10; and a plurality of high-refractive-index resin portions 50 arranged on the fiber-holding portion 20 and separated from each other in the lengthwise direction of the optical fiber 10. The high-refractive-index resin portions 50 have a refractive index equal to or greater than the refractive index of the cladding 14. Each of the high-refractive-index resin portions 50 is formed so as to make contact with the outer periphery of the exposed cladding portion 16 along the circumferential direction of the cladding 14.
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Inventors:
CHIBA YASUTO (JP)
Application Number:
PCT/JP2019/033918
Publication Date:
March 05, 2020
Filing Date:
August 29, 2019
Export Citation:
Assignee:
FUJIKURA LTD (JP)
International Classes:
G02B6/02; G02B6/44; H01S3/10
Foreign References:
| JP2010181574A | 2010-08-19 | |||
| US20130016740A1 | 2013-01-17 | |||
| JP2002131550A | 2002-05-09 | |||
| JP2015145959A | 2015-08-13 | |||
| JP2016031523A | 2016-03-07 | |||
| US20140363125A1 | 2014-12-11 | |||
| JP2016161867A | 2016-09-05 | |||
| JP2016529548A | 2016-09-23 |
Attorney, Agent or Firm:
MORI Tomohiro (JP)
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