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Optical microfiber physical sensors

Optical microfiber physical sensors
Optical microfiber physical sensors
This chapter explores the Optical microfibers and nanofibers (MNFs) in terms of the fabrication techniques and optical and mechanical properties and provides an overview of some MNF-based sensors. Optical MNFs exhibit many desirable characteristics such as large evanescent field, strong optical confinement, bend insensitivity, high configurability, high compactness, and the feasibility of extremely high-Q resonators. The resulting sensors hold numerous advantages over their standard optical fiber counterparts, including high sensitivity, high detection bandwidth, fast response, high selectiveness, low intrusiveness, small size, and lightweight. Resonator-type MNF-based sensors comprise all sensors that exploit resonant structures. MNFs have been used to manufacture homogeneous resonant sensors in the arrangements of loop, knot, and coil. The sensitivity of non-resonator-type MNF-based sensors scales with the MNF length. The detection bandwidth associated with certain sensing mechanisms such as the Faraday effect decreases with longer optical path lengths. A trade-off must be considered for a good balance between sensitivity and detection bandwidth.
CRC Press
Chen, G.Y.
b766d3f7-a6dc-4c15-8f00-17ad044348c1
Brambilla, G.
815d9712-62c7-47d1-8860-9451a363a6c8
Rajan, Ginu
Chen, G.Y.
b766d3f7-a6dc-4c15-8f00-17ad044348c1
Brambilla, G.
815d9712-62c7-47d1-8860-9451a363a6c8
Rajan, Ginu

Chen, G.Y. and Brambilla, G. (2015) Optical microfiber physical sensors. In, Rajan, Ginu (ed.) Optical Fiber Sensors: Advanced Techniques and Applications. Boca Raton. CRC Press. (doi:10.1201/b18074).

Record type: Book Section

Abstract

This chapter explores the Optical microfibers and nanofibers (MNFs) in terms of the fabrication techniques and optical and mechanical properties and provides an overview of some MNF-based sensors. Optical MNFs exhibit many desirable characteristics such as large evanescent field, strong optical confinement, bend insensitivity, high configurability, high compactness, and the feasibility of extremely high-Q resonators. The resulting sensors hold numerous advantages over their standard optical fiber counterparts, including high sensitivity, high detection bandwidth, fast response, high selectiveness, low intrusiveness, small size, and lightweight. Resonator-type MNF-based sensors comprise all sensors that exploit resonant structures. MNFs have been used to manufacture homogeneous resonant sensors in the arrangements of loop, knot, and coil. The sensitivity of non-resonator-type MNF-based sensors scales with the MNF length. The detection bandwidth associated with certain sensing mechanisms such as the Faraday effect decreases with longer optical path lengths. A trade-off must be considered for a good balance between sensitivity and detection bandwidth.

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Published date: 2015

Identifiers

Local EPrints ID: 442518
URI: http://eprints.soton.ac.uk/id/eprint/442518
PURE UUID: dc7afbd1-2af3-453a-8793-32f0e23b531f
ORCID for G. Brambilla: ORCID iD orcid.org/0000-0002-5730-0499

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Date deposited: 17 Jul 2020 16:31
Last modified: 02 Apr 2022 01:38

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Contributors

Author: G.Y. Chen
Author: G. Brambilla ORCID iD
Editor: Ginu Rajan

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