Title:
OPTICAL FIBER GRATING SENSING DEMODULATION DEVICE CAPABLE OF FLUCTUATION SUPPRESSION UNDER VARYING TEMPERATURE ENVIRONMENT AND DEMODULATING METHOD
Document Type and Number:
WIPO Patent Application WO/2018/028051
Kind Code:
A1
Abstract:
An optical fiber grating sensing demodulation device capable of fluctuation suppression under a varying temperature environment and a demodulation method therefor. The demodulation device comprises a broadband light source (1), an optical attenuator (2), a tunable F-P filter (3), a first optical fiber isolator (41), an erbium-doped optical fiber amplifier (5), an optical fiber primary beam splitter (6), a first optical fiber secondary beam splitter (71), an optical fiber circulator (8), an optical fiber grating sensing array (9), a first photoelectric detector array (161), an optical fiber air chamber (10), a second optical fiber secondary beam splitter (72), an optical fiber F-P etalon (11), a notching filter (12), an optical fiber auxiliary interferometer (13) composed of a second optical fiber isolator (42), an optical fiber coupler (14), a faraday polariscope (15) and a second photoelectric detector array (162), a data acquisition card (17), and a processor (18).
Inventors:
JIANG JUNFENG (CN)
LIU TIEGEN (CN)
YAN JINLING (CN)
LIU KUN (CN)
WANG SHUANG (CN)
ZHANG XUEZHI (CN)
ZANG CHUANJUN (CN)
XIE RENWEI (CN)
CHU QILIANG (CN)
LIU TIEGEN (CN)
YAN JINLING (CN)
LIU KUN (CN)
WANG SHUANG (CN)
ZHANG XUEZHI (CN)
ZANG CHUANJUN (CN)
XIE RENWEI (CN)
CHU QILIANG (CN)
Application Number:
PCT/CN2016/103525
Publication Date:
February 15, 2018
Filing Date:
October 27, 2016
Export Citation:
Assignee:
UNIV TIANJIN (CN)
International Classes:
G01D5/353
Foreign References:
| CN104931081A | 2015-09-23 | |||
| US8909040B1 | 2014-12-09 | |||
| CN105698871A | 2016-06-22 | |||
| CN102095487A | 2011-06-15 | |||
| CN104567959A | 2015-04-29 | |||
| CN103759750A | 2014-04-30 | |||
| CN101718942A | 2010-06-02 |
Attorney, Agent or Firm:
BEI&OCEAN (CN)
Download PDF: