Temperature Sensor With Enhanced Sensitivity Based on Photonic Crystal Fiber Interferometer With Material Overlay

Chloroform infiltrate temperature sensor using asymmetric circular dual-core photonic crystal fiber

“…To improve the sensitivity and temperature sensing range of a sensor, unusual materials can be used to PCF fabrication like Telluride, Chalcogenide glasses, and liquid materials [11][12][13][14][15]. Recently, it is observed that liquid core PCFs show a large variation of refractive index depending on temperature [1].…”

Ultrasensitive microtaper with an air-gap microcavity fiber Fabry-Pérot interferometer

“…This is because the applied T (°C) is controlled by a TE cooler and is increased to reduce the RI of the liquid (thermo-optic coefficient dn/dT = −3.74×10 -4 °C -1 ) to make the spectra varying greatly. The so called material dispersion engineered technique on photonic crystal fiber sensor has been investigated by our published paper [7]. Relationship of the shifts of the first peak in the transition region of spectra and the T (°C) variation is shown in the figure 4(b).…”

Demonstration of a Photonic-Based Linear Temperature Sensor

“…ptical approach associated temperature sensors have demonstrated their high variety applications in important and expanding fields, such as turbines, combustors, nuclear reactors, oil-drills, health-monitoring systems for aerospace hot structures, owing to their intrinsic advantages of immunity to electromagnetic interference and possibility to operate in toxic, corrosive to potentially explosive environments [1][2][3][4][5][6]. However, most of today's optical temperature sensors are based on fiber-optics, so the limitation of compactness remains [1][2][3][4].…”

“…However, most of today's optical temperature sensors are based on fiber-optics, so the limitation of compactness remains [1][2][3][4]. Moreover, its thermal sensitivity is also relative weak due to its relative low thermal modulation efficiency of silica material.…”