Title:
OPTICAL COMBINER AND LASER DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/241545
Kind Code:
A1
Abstract:
The present invention provides an optical combiner capable of reducing the NA of light propagating through a core located outside a light output part. An optical combiner (40) is provided with a light output part (130) to which light input parts (110, 120) respectively having cores (11, 21) are connected. The light output part (130) includes a center core (31) to which the core (11) of the light input part (110) is optically coupled, and a ring core (33) to which the core (21) of the light input part (120) is optically coupled. The ring core (33) has an outside diameter larger than the outside diameter of the center core (31). The light input part (120) includes an optical fiber (20) and a light adjustment member (50) that causes light emitted from an end of the core (21) of the optical fiber (20) to propagate such that the emission angle thereof becomes smaller.
Inventors:
MATSUMOTO RYOKICHI (JP)
FUJITA TOMOYUKI (JP)
YAMAGUCHI YUTAKA (JP)
KOBAYASHI TAKUYA (JP)
SUZUKI KIWAMU (JP)
FUJITA TOMOYUKI (JP)
YAMAGUCHI YUTAKA (JP)
KOBAYASHI TAKUYA (JP)
SUZUKI KIWAMU (JP)
Application Number:
PCT/JP2021/019723
Publication Date:
December 02, 2021
Filing Date:
May 25, 2021
Export Citation:
Assignee:
FUJIKURA LTD (JP)
International Classes:
G02B6/02; G02B6/036; G02B6/04; G02B6/32; H01S3/10
Foreign References:
| JP2014197193A | 2014-10-16 | |||
| JP2018527184A | 2018-09-20 | |||
| JP2013190714A | 2013-09-26 | |||
| JP2017187651A | 2017-10-12 | |||
| JP2019049698A | 2019-03-28 | |||
| JP2009212441A | 2009-09-17 | |||
| US8781269B2 | 2014-07-15 | |||
| US9620925B2 | 2017-04-11 | |||
| JP2007518566A | 2007-07-12 |
Attorney, Agent or Firm:
MORI Tomohiro (JP)
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