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Sensors 2017, 17(10), 2336; doi:10.3390/s17102336

Etched Polymer Fibre Bragg Gratings and Their Biomedical Sensing Applications

School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, Wollongong 2522, Australia
HFC Network Assurance, HFC Operations, NBN, Sydney 2060, Australia
School of Electrical Engineering and Telecommunications, UNSW Australia, Sydney 2052, Australia
Author to whom correspondence should be addressed.
Received: 12 September 2017 / Revised: 11 October 2017 / Accepted: 12 October 2017 / Published: 13 October 2017
(This article belongs to the Special Issue Fiber Bragg Grating Based Sensors)
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Bragg gratings in etched polymer fibres and their unique properties and characteristics are discussed in this paper. Due to the change in material and mechanical properties of the polymer fibre through etching, Bragg gratings inscribed in such fibres show high reflectivity and enhanced intrinsic sensitivity towards strain, temperature, and pressure. The short-term and long-term stability of the gratings and the effect of hysteresis on the dynamic characteristics are also discussed. The unique properties and enhanced intrinsic sensitivity of etched polymer fibre Bragg grating are ideal for the development of high-sensitivity sensors for biomedical applications. To demonstrate their biomedical sensing capabilities, a high-sensitivity pressure transducer that operates in the blood pressure range, and a breathing rate monitoring device are developed and presented. View Full-Text
Keywords: polymer fibre Bragg grating; etched single mode fibre; biomedical sensing; pressure transducer; breathing rate monitor polymer fibre Bragg grating; etched single mode fibre; biomedical sensing; pressure transducer; breathing rate monitor

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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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Rajan, G.; Bhowmik, K.; Xi, J.; Peng, G.-D. Etched Polymer Fibre Bragg Gratings and Their Biomedical Sensing Applications. Sensors 2017, 17, 2336.

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