Sagnac mirror loop with two polarization maintaining fibers for twist measurement by tracking adjacent dips with tunable measurement range
نویسندگان
چکیده
The transmission characteristics of Sagnac fiber loop interferometer which consists two sections polarization-maintaining (PMF) spliced at different offset angles were analyzed. Based on the simulation results, an application for twist measurement where PMFs was designed. When lengths are equal, a clear spectrum can be obtained or torsion sensing. A phenomenon that dips would split merge with angle alteration used Measurement range and sensitivity adjusted by changing angle. improved calculating distance between adjacent dips, being 0.73 nm/° 8.37 nm/(rad/m) when 75°.
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ژورنال
عنوان ژورنال: Optics and Laser Technology
سال: 2022
ISSN: ['0030-3992', '1879-2545']
DOI: https://doi.org/10.1016/j.optlastec.2022.107877