Title:
LIGHT DETECTING DEVICE, AND LASER DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/027184
Kind Code:
A1
Abstract:
A light detecting device (2) is provided with: a first cladding mode stripper (21) and a second cladding mode stripper (22) provided in an optical fiber, with a prescribed spacing therebetween; a first light detector (31) for detecting the intensity of light leaking from the optical fiber (10) between the first cladding mode stripper (21) and the second cladding mode stripper (22); and a second light detector (32) for detecting the intensity of light leaking from the optical fiber (10) on the opposite side to the first cladding mode stripper (21) side of the second cladding mode stripper (22).
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Inventors:
SAKAMOTO SHINICHI (JP)
KIYOYAMA WATARU (JP)
KIYOYAMA WATARU (JP)
Application Number:
PCT/JP2019/029971
Publication Date:
February 06, 2020
Filing Date:
July 31, 2019
Export Citation:
Assignee:
FUJIKURA LTD (JP)
International Classes:
G01J1/02; G02B6/42; H01S3/00; H01S3/067
Domestic Patent References:
| WO2018124038A1 | 2018-07-05 |
Foreign References:
| US20180059343A1 | 2018-03-01 | |||
| JP2016161867A | 2016-09-05 | |||
| JP2016510135A | 2016-04-04 | |||
| US20140313513A1 | 2014-10-23 | |||
| JP2017208370A | 2017-11-24 |
Attorney, Agent or Firm:
MORIMURA Yasuo et al. (JP)
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