Optical Fiber Temperature Sensors and Their Biomedical Applications

Abstract

The use of sensors in the real world is on the rise, providing information on medical diagnostics for healthcare and improving quality of life. Optical fiber sensors, as a result of their unique properties (small dimensions, capability of multiplexing, chemical inertness, and immunity to electromagnetic fields) have found wide applications, ranging from structural health monitoring to biomedical and point-of-care instrumentation. Furthermore, these sensors usually have good linearity, rapid response for real-time monitoring, and high sensitivity to external perturbations. Optical fiber sensors, thus, present several features that make them extremely attractive for a wide variety of applications, especially biomedical applications. This paper reviews achievements in the area of temperature optical fiber sensors, different configurations of the sensors reported over the last five years, and application of this technology in biomedical applications.

Dually nanocoated planar waveguides towards multi-parameter sensing

“…Finally, in Table S1 there is a comparison of the sensitivities obtained in the different temperature and humidity tests performed, whilst a comparison with other sensors can be extracted from a couple of reviews on temperature and humidity sensors. Regarding temperature sensors, the sensitivity of the device proposed in this www.nature.com/scientificreports/ work improves the highest sensitivity of all sensors reported in 22 , which is 0.5 nm/°C, whereas optical humidity sensors present values that range from 1 pm/%RH to 1 nm/%RH 23 .…”

mOptical Sensing for the Internet of Things: A Smartphone‐Controlled Platform for Temperature Monitoring

“…Thus, the sensor response is based on the mismatch between perturbated and nonperturbated conditions that are correlated with the physical disturbance applied to sense the surrounding environment. [ 29–31 ] Many works have been published in this field, featuring improvements in the figures of merit, cost, and energy consumption reduction, and ease in manufacturing. Examples include, the fabrication of optical fibers with different materials and geometries, novel fibers working as amplifiers, multicore fibers, multiplexing schemes, or new detection systems.…”

Recent Advances in Biomedical Photonic Sensors: A Focus on Optical-Fibre-Based Sensing

“…In general, for physical parameter sensing, fibre Bragg gratings and Fabry-Pérot interferometers (FPI) are the key technologies employed. Further information can be found elsewhere for other physical parameters and previous works [2,3,[34][35][36][37].…”