Title:
MONITOR DEVICE, MONITOR METHOD, AND LASER DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/166365
Kind Code:
A1
Abstract:
According to the present invention, a technology is achieved which monitors, using a photodetector disposed to face the side surface of an optical fiber, the intensities of a plurality of beams guided through the optical fiber and having different electric field distributions. This monitor device (1) comprises: m photodetectors (11, 12) arranged to face the side surface of an optical fiber (2); and an arithmetic unit (13) that calculates, from outputs D1, D2, ..., Dm of the m photodetectors (11, 12), the intensities L1, L2, ..., Ln of n beams guided through the optical fiber (2).
Inventors:
MATSUMOTO RYOKICHI (JP)
Application Number:
PCT/JP2020/044779
Publication Date:
August 26, 2021
Filing Date:
December 02, 2020
Export Citation:
Assignee:
FUJIKURA LTD (JP)
International Classes:
G01J1/02; G02B6/02; G02B6/036; G02B6/42; H01S3/00
Foreign References:
| JP5865977B1 | 2016-02-17 | |||
| JP2014513422A | 2014-05-29 | |||
| JP2008511148A | 2008-04-10 | |||
| JP2017208370A | 2017-11-24 | |||
| JPH10307228A | 1998-11-17 | |||
| US20130087694A1 | 2013-04-11 | |||
| US6424663B1 | 2002-07-23 | |||
| JPH02268244A | 1990-11-01 |
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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