Title:
LIGHT SOURCE FREQUENCY-SWEEPING NON-LINEARITY CORRECTION METHOD FOR OPTICAL FREQUENCY DOMAIN POLARIZATION CROSSTALK MEASUREMENT
Document Type and Number:
WIPO Patent Application WO/2023/020179
Kind Code:
A1
Abstract:
A light source frequency-sweeping non-linearity correction method for optical frequency domain polarization crosstalk measurement, which method belongs to the field of optical fiber testing. The method comprises: after performing time differentiation according to the phase of an auxiliary interferometer, performing calculation to obtain the actual frequency sweeping rate of a light source; performing calculation by combining a required collection time interval and an angular frequency of the auxiliary interferometer, so as to obtain a phase grid division interval parameter; performing equal-interval division on the phase of the auxiliary interferometer by using the interval parameter, so as to obtain an inquiry phase grid; performing interpolation resampling on the phase of the auxiliary interferometer, so as to extract an auxiliary sampling time grid corresponding to the inquiry phase grid; performing delay correction on the auxiliary sampling time grid, so as to then obtain an inquiry sampling time grid; and finally performing interpolation resampling on a main interference fringe, so as to extract a corrected main interference fringe corresponding to the inquiry sampling time grid. Therefore, a phase error introduced by light source frequency-sweeping non-linearity in optical frequency domain polarization crosstalk measurement can be effectively corrected.
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Inventors:
YU ZHANGJUN (CN)
ZHU TINGYI (CN)
ZHUANG QINQIN (CN)
YANG JUN (CN)
XU PENGBAI (CN)
WEN KUNHUA (CN)
WANG YUNCAI (CN)
QIN YUWEN (CN)
ZHU TINGYI (CN)
ZHUANG QINQIN (CN)
YANG JUN (CN)
XU PENGBAI (CN)
WEN KUNHUA (CN)
WANG YUNCAI (CN)
QIN YUWEN (CN)
Application Number:
PCT/CN2022/106574
Publication Date:
February 23, 2023
Filing Date:
July 19, 2022
Export Citation:
Assignee:
UNIV GUANGDONG TECHNOLOGY (CN)
International Classes:
G01M11/00
Foreign References:
| CN113804404A | 2021-12-17 | |||
| CN110487313A | 2019-11-22 | |||
| US20020191190A1 | 2002-12-19 | |||
| US20170276470A1 | 2017-09-28 | |||
| US20100145648A1 | 2010-06-10 |
Attorney, Agent or Firm:
YOGO PATENT AND TRADEMARK AGENCY LIMITED COMPANY (CN)
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