Title:
METHOD FOR DETECTION AND DETECTOR
Document Type and Number:
Japanese Patent JP2019070652
Kind Code:
A
Abstract:
To monitor the power of output light precisely and/or monitor the power of returning light precisely.SOLUTION: In a method for detecting a Rayleigh scattered light which leaked out of a side surface of an optical fiber in a fiber laser (FL) or in a fiber laser system (FLS), whether the Rayleigh scattered light detected by the detector (DD) is generated from returning light or from output light is determined based on the waveform of the Rayleigh scattered light.SELECTED DRAWING: Figure 1
Inventors:
YOSHIDA KENSUKE
Application Number:
JP2018212953A
Publication Date:
May 09, 2019
Filing Date:
November 13, 2018
Export Citation:
Assignee:
FUJIKURA LTD
International Classes:
G01J1/02; H01L31/0232; H01S3/00; H01S3/067
Domestic Patent References:
| JP2015159195A | 2015-09-03 | |||
| JP2002509612A | 2002-03-26 | |||
| JP2016143739A | 2016-08-08 |
Foreign References:
| US20140313513A1 | 2014-10-23 | |||
| US20150292938A1 | 2015-10-15 |
Attorney, Agent or Firm:
Harakenzo world patent & trademark