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Prospects of Photonic Crystal Fiber as Physical Sensor: An Overview

1
Indian Institute of Technology (Indian School of Mines), Department of Applied Physics, Fiber Optics Lab, Dhanbad 826004, India
2
Fiber Optics and Photonics Division, CSIR-Central Glass and Ceramic Research Institute, CSIR, Kolkata 700032, India
*
Authors to whom correspondence should be addressed.
Sensors 2019, 19(3), 464; https://doi.org/10.3390/s19030464
Received: 27 November 2018 / Revised: 11 December 2018 / Accepted: 11 December 2018 / Published: 23 January 2019
(This article belongs to the Special Issue Optical Sensors Using Microstructured and Photonics Crystal Fibers)

Abstract

Photonic crystal fiber sensors have potential application in environmental monitoring, industry, biomedicine, food preservation, and many more. These sensors work based on advanced and flexible phototonic crystal fiber (PCF) structures, controlled light propagation for the measurement of amplitude, phase, polarization and wavelength of spectrum, and PCF-incorporated interferometry techniques. In this article various PCF-based physical sensors are summarized with the advancement of time based on reported works. Some physical PCF sensors are discussed based on solid core as well as hollow core structures, dual core fibers, liquid infiltrated structures, metal coated fibers, grating incorporated fibers. With the advancement of sensing technology the possibilities of temperature, pressure, strain, twist, curvature, electromagnetic field, and refractive index sensing are discussed. Also, limitations as well as possible solutions and future hopes are outlined. View Full-Text
Keywords: photonic crystal fiber; temperature sensors; pressure sensors; strain sensor; twist or torsion sensor; curvature or bend sensors; electromagnetic sensors; refractive index sensors photonic crystal fiber; temperature sensors; pressure sensors; strain sensor; twist or torsion sensor; curvature or bend sensors; electromagnetic sensors; refractive index sensors
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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De, M.; Gangopadhyay, T.K.; Singh, V.K. Prospects of Photonic Crystal Fiber as Physical Sensor: An Overview. Sensors 2019, 19, 464.

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