Improved localization algorithm for distributed fiber-optic sensor based on merged Michelson-Sagnac interferometer

doi:10.1364/OE.384728

2020-02-25

PRE

DOI：10.1364/OE.384728

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摘要

En 中文

A novel distributed fiber-optic localization algorithm with high sensitivity and precision based on merged Michelson-Sagnac interferometer is proposed and demonstrated. By performing simple addition and subtraction processing on the two phase differences of the two interferometers, two superimposed signals with a fixed delay can be obtained. The time delay can be calculated by a cross-correlation algorithm. Combined with the polynomial fitting interpolation, the disturbance location resolution is significantly improved. The total sensing distance can reach 120 km, and the localization errors are within +/- 35 m and +/- 160 m in the contact and non-contact disturbance experiment, respectively. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Keyword:

MACH-ZEHNDER

LOCATION

期刊

Optics Express

IF:

3.3

论文数:

6.1W

被引数:

14.3W

机构

fudan university

学者数:

11.8W

论文数: 7.7W

被引数: 121

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