Title:
OPTICAL FIBER CABLE, WATER PRESSURE SENSING SYSTEM, AND SENSITIVITY CORRECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/075153
Kind Code:
A1
Abstract:
An optical fiber cable (10) according to the present invention is provided with: a long pipe (11); and at least one optical fiber (12) which is held and wired inside the pipe (11). The pipe (11) is structured so as to stretch in a longitudinal direction when water pressure outside the pipe (11) changes. The optical fiber (12) is structured so as to stretch in a longitudinal direction when the pipe (11) is stretched in a longitudinal direction and the stretching of the pipe (11) is transferred to the optical fiber.
Inventors:
YANO YUTAKA (JP)
MISUMI EITARO (JP)
MISUMI EITARO (JP)
Application Number:
PCT/JP2020/031943
Publication Date:
April 22, 2021
Filing Date:
August 25, 2020
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G01L11/02; G01D5/353; G02B6/02; G02B6/44
Foreign References:
| JP2017519221A | 2017-07-13 | |||
| JP2011017652A | 2011-01-27 | |||
| JP2008175560A | 2008-07-31 | |||
| JPH11230840A | 1999-08-27 | |||
| US20110096321A1 | 2011-04-28 |
Attorney, Agent or Firm:
IEIRI Takeshi (JP)
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