Sagnac mirror loop with two polarization maintaining fibers for twist measurement by tracking adjacent dips with tunable measurement range

Pingsheng Xue; Qiang Liu; Qiang Wu; Yongqing Fu

doi:10.1016/j.optlastec.2022.107877

Sagnac mirror loop with two polarization maintaining fibers for twist measurement by tracking adjacent dips with tunable measurement range

Pingsheng Xue, Qiang Liu^*, Qiang Wu^*, Yongqing Fu

^*Corresponding author for this work

Mathematics, Physics and Electrical Engineering

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

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Abstract

The transmission characteristics of Sagnac fiber loop interferometer which consists two sections of polarization-maintaining fiber (PMF) spliced at different offset angles were analyzed. Based on the simulation results, an application for twist measurement where PMFs were spliced at different offset angles was designed. When the lengths of two PMFs are equal, a clear spectrum can be obtained for twist or torsion sensing. A phenomenon that the dips would split or merge with twist angle alteration can be used for sensing. Measurement range and sensitivity can be adjusted by changing the PMFs offset angle. The sensitivity was improved by calculating the distance between two adjacent dips, being 0.73 nm/° or 8.37 nm/(rad/m) when the offset angle was 75°.

Original language	English
Article number	107877
Pages (from-to)	1-6
Number of pages	6
Journal	Optics and Laser Technology
Volume	149
Early online date	20 Jan 2022
DOIs	https://doi.org/10.1016/j.optlastec.2022.107877
Publication status	Published - 1 May 2022

Keywords

fiber loop interferometer
polarization maintaining fiber
fiber sensor

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10.1016/j.optlastec.2022.107877

Optics and laser Technology final manuscriptAccepted author manuscript, 924 KBLicence: CC BY-NC-ND

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title = "Sagnac mirror loop with two polarization maintaining fibers for twist measurement by tracking adjacent dips with tunable measurement range",

abstract = "The transmission characteristics of Sagnac fiber loop interferometer which consists two sections of polarization-maintaining fiber (PMF) spliced at different offset angles were analyzed. Based on the simulation results, an application for twist measurement where PMFs were spliced at different offset angles was designed. When the lengths of two PMFs are equal, a clear spectrum can be obtained for twist or torsion sensing. A phenomenon that the dips would split or merge with twist angle alteration can be used for sensing. Measurement range and sensitivity can be adjusted by changing the PMFs offset angle. The sensitivity was improved by calculating the distance between two adjacent dips, being 0.73 nm/° or 8.37 nm/(rad/m) when the offset angle was 75°.",

keywords = "fiber loop interferometer, polarization maintaining fiber, fiber sensor",

author = "Pingsheng Xue and Qiang Liu and Qiang Wu and Yongqing Fu",

note = "Funding information: This research was funded by the National Natural Science Foundation of China (Grant No. 51907017), the Key Science and Technology Research Projects of Higher Education Institutions in Hebei Province of China (Grant No. ZD2019304), Hebei Natural Science Foundation (Grant No. F2020501040), the Fundamental Research Funds for the Central Universities of China (Grant No. N2123012).",

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doi = "10.1016/j.optlastec.2022.107877",

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T1 - Sagnac mirror loop with two polarization maintaining fibers for twist measurement by tracking adjacent dips with tunable measurement range

AU - Xue, Pingsheng

AU - Liu, Qiang

AU - Wu, Qiang

AU - Fu, Yongqing

N1 - Funding information: This research was funded by the National Natural Science Foundation of China (Grant No. 51907017), the Key Science and Technology Research Projects of Higher Education Institutions in Hebei Province of China (Grant No. ZD2019304), Hebei Natural Science Foundation (Grant No. F2020501040), the Fundamental Research Funds for the Central Universities of China (Grant No. N2123012).

PY - 2022/5/1

Y1 - 2022/5/1

N2 - The transmission characteristics of Sagnac fiber loop interferometer which consists two sections of polarization-maintaining fiber (PMF) spliced at different offset angles were analyzed. Based on the simulation results, an application for twist measurement where PMFs were spliced at different offset angles was designed. When the lengths of two PMFs are equal, a clear spectrum can be obtained for twist or torsion sensing. A phenomenon that the dips would split or merge with twist angle alteration can be used for sensing. Measurement range and sensitivity can be adjusted by changing the PMFs offset angle. The sensitivity was improved by calculating the distance between two adjacent dips, being 0.73 nm/° or 8.37 nm/(rad/m) when the offset angle was 75°.

AB - The transmission characteristics of Sagnac fiber loop interferometer which consists two sections of polarization-maintaining fiber (PMF) spliced at different offset angles were analyzed. Based on the simulation results, an application for twist measurement where PMFs were spliced at different offset angles was designed. When the lengths of two PMFs are equal, a clear spectrum can be obtained for twist or torsion sensing. A phenomenon that the dips would split or merge with twist angle alteration can be used for sensing. Measurement range and sensitivity can be adjusted by changing the PMFs offset angle. The sensitivity was improved by calculating the distance between two adjacent dips, being 0.73 nm/° or 8.37 nm/(rad/m) when the offset angle was 75°.

KW - fiber loop interferometer

KW - polarization maintaining fiber

KW - fiber sensor

U2 - 10.1016/j.optlastec.2022.107877

DO - 10.1016/j.optlastec.2022.107877

M3 - Article

SN - 0030-3992

VL - 149

SP - 1

EP - 6

JO - Optics and Laser Technology

JF - Optics and Laser Technology

M1 - 107877

ER -

Sagnac mirror loop with two polarization maintaining fibers for twist measurement by tracking adjacent dips with tunable measurement range

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Keywords

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