Title:
INTERFEROMETRIC SENSOR EMPLOYING HOLLOW-CORE PHOTONIC BANDGAP FIBER, AND MANUFACTURING DEVICE AND METHOD
Document Type and Number:
WIPO Patent Application WO/2020/087197
Kind Code:
A1
Abstract:
Disclosed are an interferometric sensor employing a hollow-core photonic bandgap fibers, and a manufacturing device and method. The interferometric sensor comprises a first coupler, a second coupler, a first optical fiber, and a second optical fiber. The first optical fiber and the second optical fiber are both hollow-core photonic bandgap fibers. A first arm of the first coupler is connected to one end of the first optical fiber. The other end of the first optical fiber is connected to a first arm of the second coupler. A second arm of the first coupler is connected to one end of the second optical fiber. The other end of the second optical fiber is connected to a second arm of the second coupler. An air microcavity is provided at one of the ends of the second optical fiber. The hollow-core photonic bandgap fiber is used in the interferometric sensor. The fiber guides light by means of a photonic bandgap effect. Guide mode energy is almost completely confined in a fiber core for transmission; and thus, the interferometric sensor manufactured by means of the fiber has low insertion loss, and low nonlinearity; insensitivity to an ambient refractive index and a bending disturbance; and eliminates the issues of poor structural and mechanical performance, poor durability, and low sensitivity.
Inventors:
WANG YING (CN)
WANG YIPING (CN)
MAO CHUN (CN)
WANG YIPING (CN)
MAO CHUN (CN)
Application Number:
PCT/CN2018/112320
Publication Date:
May 07, 2020
Filing Date:
October 29, 2018
Export Citation:
Assignee:
UNIV SHENZHEN (CN)
International Classes:
G01L11/02
Foreign References:
| CN104515621A | 2015-04-15 | |||
| CN104596996A | 2015-05-06 | |||
| CN101324443A | 2008-12-17 | |||
| CN103471742A | 2013-12-25 | |||
| CN102073104A | 2011-05-25 | |||
| EP1391693A1 | 2004-02-25 |
Other References:
WANG, CHAO ET AL.: "Hollow-core Photonic Bandgap Fibers: Properties and Sensing Technology", OPTO-ELECTRONIC ENGINEERING, vol. 45, no. 9, 1 January 2018 (2018-01-01), pages 1 - 15, XP055697739, ISSN: 1003-501X, DOI: 10.12086/oee.2018.180151
Attorney, Agent or Firm:
HENSEN INTELLECTUAL PROPERTY FIRM (CN)
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