Ultra-Sensitive Curvature Sensor Based On Liquid Crystal-Infiltrated Fiber Interferometer

Keywords

curvature sensor; hollow optical fiber; liquid crystal fiber; Mach-Zehnder interferometer; optical fiber sensor

Abstract

All-fiber curvature sensors based on a liquid crystal-filled fiber Mach-Zehnder interferometer (LCF-MZI) are proposed and experimentally demonstrated for high performance measurements of very small curvatures from 0 to 0.0667 m-1, which is usually hard to be precisely monitored by well-known methods. Such a curvature sensor can be easily fabricated by splicing a section of an LC-filled hollow core fiber between two single mode fibers. Our experimental results show that the maximum curvature sensitivity of the proposed sensor is -724.3 nm/m-1 for a wavelength shift and 632 dB/m-1 for peak intensity. These results are at least 10 times better than those of previously reported fiber interferometer sensors.

Publication Date

1-11-2017

Publication Title

Journal of Physics D: Applied Physics

Volume

50

Issue

1

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1088/1361-6463/50/1/015102

Socpus ID

85013498942 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85013498942

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