Next Article in Journal
Investigation of the Effect of Intra-Cavity Propagation Delay in Secure Optical Communication Using Chaotic Semiconductor Lasers
Next Article in Special Issue
Overcoming Challenges in Large-Core SI-POF-Based System-Level Modeling and Simulation
Previous Article in Journal
Design Investigation of 4 × 4 Nonblocking Hybrid Plasmonic Electrooptic Switch
Previous Article in Special Issue
Refractive Index Sensor Based on Twisted Tapered Plastic Optical Fibers
Open AccessReview

Multifunctional Smart Optical Fibers: Materials, Fabrication, and Sensing Applications

1
Photonics Research Center, Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
2
College of Chemistry and Chemical Engineering, Ningxia Normal University, Guyuan 756000, China
3
Research Center for Smart Wearable Technology, Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hong Kong, China
*
Authors to whom correspondence should be addressed.
Photonics 2019, 6(2), 48; https://doi.org/10.3390/photonics6020048
Received: 22 March 2019 / Revised: 25 April 2019 / Accepted: 26 April 2019 / Published: 6 May 2019
(This article belongs to the Special Issue Polymer Optical Fibre)
This paper presents a review of the development of optical fibers made of multiple materials, particularly including silica glass, soft glass, polymers, hydrogels, biomaterials, Polydimethylsiloxane (PDMS), and Polyperfluoro-Butenylvinyleth (CYTOP). The properties of the materials are discussed according to their various applications. Typical fabrication techniques for specialty optical fibers based on these materials are introduced, which are mainly focused on extrusion, drilling, and stacking methods depending on the materials’ thermal properties. Microstructures render multiple functions of optical fibers and bring more flexibility in fiber design and device fabrication. In particular, micro-structured optical fibers made from different types of materials are reviewed. The sensing capability of optical fibers enables smart monitoring. Widely used techniques to develop fiber sensors, i.e., fiber Bragg grating and interferometry, are discussed in terms of sensing principles and fabrication methods. Lastly, sensing applications in oil/gas, optofluidics, and particularly healthcare monitoring using specialty optical fibers are demonstrated. In comparison with conventional silica-glass single-mode fiber, state-of-the-art specialty optical fibers provide promising prospects in sensing applications due to flexible choices in materials and microstructures. View Full-Text
Keywords: specialty optical fibers; multi-materials; polymer optical fibers; soft-glass fibers; fiber Bragg grating; fiber sensors specialty optical fibers; multi-materials; polymer optical fibers; soft-glass fibers; fiber Bragg grating; fiber sensors
Show Figures

Figure 1

MDPI and ACS Style

Liu, Z.; Zhang, Z.F.; Tam, H.-Y.; Tao, X. Multifunctional Smart Optical Fibers: Materials, Fabrication, and Sensing Applications. Photonics 2019, 6, 48.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop