Title:
DEVICE AND METHOD FOR REALIZING SPECTRAL POLARIZATION INDEPENDENT MEASUREMENT BASED ON FREQUENCY DOMAIN DEPOLARIZATION STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2018/010255
Kind Code:
A1
Abstract:
A device for realizing spectral polarization independent measurement based on a frequency domain depolarization structure, comprising a pumping light source module (1), a depolarization module (2), an SBS effect generating module (3) and a data acquisition and spectral reconstruction module (4). Further provided is a method for realizing spectral polarization independent measurement based on a frequency domain depolarization structure, the method comprising: the pumping light source module (1) emitting a laser with a fixed polarization state; the laser at the output end of the pumping light source module (1) becoming depolarized light by means of the depolarization module (2); inputting the depolarized light as a pumping light to the SBS effect generating module (3) to interact with a signal light to be measured externally input to the SBS effect generating module (3); after being amplified by the SBS effect generating module (3), the signal light to be measured undergoes data acquisition and processing by the data acquisition and spectral reconstruction module (4) to finally obtain the spectrum of the signal to be measured. Thus, it is possible to eliminate the problems of inaccuracy in spectrum information obtaining and instability in power measurement when a spectral measurement device based on the SBS effect measures an input light signal having any arbitrary polarization state.
Inventors:
KE CHANGJIAN (CN)
LIU DEMING (CN)
XING CHEN (CN)
ZHANG KE (CN)
LIU DEMING (CN)
XING CHEN (CN)
ZHANG KE (CN)
Application Number:
PCT/CN2016/096154
Publication Date:
January 18, 2018
Filing Date:
August 22, 2016
Export Citation:
Assignee:
UNIV HUAZHONG SCIENCE TECH (CN)
International Classes:
G02B6/27; G01J3/44
Foreign References:
| US20040008918A1 | 2004-01-15 | |||
| CN103940513A | 2014-07-23 | |||
| CN102706451A | 2012-10-03 |
Other References:
DIAZ, S. ET AL.: "A High-Performance Optical Time-Domain Brillouin Distributed Fiber Sensor", IEEE SENSORS JOURNAL, vol. 8, no. 7, 31 July 2008 (2008-07-31), pages 1268 - 1270, XP011266615, ISSN: 1530-437X, DOI: doi:10.1109/JSEN.2008.926963
LIU, JIHONG ET AL.: "Low-DOP Depolarizer for Linearly Polarized Light Independent of Direction of Vibration", ACTA OPTICA SINICA, vol. 27, no. 3, 31 March 2007 (2007-03-31), pages 536 - 539, ISSN: 0253-2239
LIU, JIHONG ET AL.: "Low-DOP Depolarizer for Linearly Polarized Light Independent of Direction of Vibration", ACTA OPTICA SINICA, vol. 27, no. 3, 31 March 2007 (2007-03-31), pages 536 - 539, ISSN: 0253-2239
Attorney, Agent or Firm:
HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY PATENT AGENCY CENTER (CN)
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