Title:
PRESSURE SENSOR
Document Type and Number:
WIPO Patent Application WO/2020/184396
Kind Code:
A1
Abstract:
The present invention is provided with: a light source which outputs test light; a sensor optical fiber to which the test light is input and through which the test light is propagated in a loss equal to or greater than 0.3 dB/m; and a light receiver which receives the test light propagated through the sensor optical fiber, wherein a pressure applied to the sensor optical fiber is detected on the basis of the optical intensity of the test light received by the light receiver. An optical transmission body, which includes the sensor optical fiber and a transmission optical fiber, can be also provided, wherein the transmission optical fiber is connected to the sensor optical fiber and has a lower propagation loss than the sensor optical fiber.
Inventors:
HASEGAWA HIDEAKI (JP)
TAMAOKA HIROYUKI (JP)
YAGI TAKESHI (JP)
ARAI SHINICHI (JP)
TAMAOKA HIROYUKI (JP)
YAGI TAKESHI (JP)
ARAI SHINICHI (JP)
Application Number:
PCT/JP2020/009514
Publication Date:
September 17, 2020
Filing Date:
March 05, 2020
Export Citation:
Assignee:
FURUKAWA ELECTRIC CO LTD (JP)
International Classes:
G01H9/00; G01L1/24; G01L5/00; G01L11/02; G02B6/00; G02B6/02; G02B6/04
Foreign References:
| CN102998039A | 2013-03-27 | |||
| CN101261117A | 2008-09-10 | |||
| JP2006258463A | 2006-09-28 | |||
| JP2013511372A | 2011-05-20 | |||
| JP2013511749A | 2011-05-20 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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