Title:
OPTICAL POWER MONITORING DEVICE, LASER DEVICE, AND LASER SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/199508
Kind Code:
A1
Abstract:
An optical power monitoring device of the present invention is an optical power monitoring device which monitors the power of reflected beams input to an optical fiber among reflected beams of output beams output from the optical fiber, and is provided with: a photodetector which is disposed near the optical fiber and detects a Rayleigh scattered beam from beams guided by the optical fiber; and a calculating unit which performs calculation for excluding a component corresponding to the output of the output beams from the detection result obtained from the optical detector, by using first information indicating a relationship between an output of the output beams obtained in advance in a situation where the reflected beams are not generated and a detection result of the photodetector.
Inventors:
YOKOYAMA YOSHITAKA (JP)
Application Number:
PCT/JP2017/006624
Publication Date:
November 23, 2017
Filing Date:
February 22, 2017
Export Citation:
Assignee:
FUJIKURA LTD (JP)
International Classes:
H01S3/067; G01J1/02; G01J1/42; H01S3/00
Foreign References:
| JP2016076598A | 2016-05-12 | |||
| JP2015525342A | 2015-09-03 | |||
| US20130242379A1 | 2013-09-19 |
Other References:
See also references of EP 3460926A4
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
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