Temperature measurement using a microfiber knot ring encapsulated in PDMS

Fan, Rui; Yang, Juntong; Li, Jin; Meng, Fanli

doi:10.1088/1402-4896/ab34ec

Cited by 8 publications

(5 citation statements)

References 30 publications

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“…By coating the sensor arm with PDMS, it is made more sensitive to temperature sensing [26]. Different from the structure in [26], the temperature sensing experiment was completed in [27] with only one micro-nano fiber ring, and the sensitivity increased 9 times, from 183 to 1.67 nm/°C . In the literature described above, PDMS was coated outside the cladding of the fiber as a coating material.…”

Section: Pdms Coatingmentioning

confidence: 99%

A Review of Coating Materials Used to Improve the Performance of Optical Fiber Sensors

Yang

Wang

et al. 2020

Sensors

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In order to improve the performance of fiber sensors and fully tap the potential of optical fiber sensors, various optical materials have been selectively coated on optical fiber sensors under the background of the rapid development of various optical materials. On the basis of retaining the original characteristics of the optical fiber sensors, the coated sensors are endowed with new characteristics, such as high sensitivity, strong structure, and specific recognition. Many materials with a large thermal optical coefficient and thermal expansion coefficients are applied to optical fibers, and the temperature sensitivities are improved several times after coating. At the same time, fiber sensors have more intelligent sensing capabilities when coated with specific recognition materials. The same/different kinds of materials combined with the same/different fiber structures can produce different measurements, which is interesting. This paper summarizes and compares the fiber sensors treated by different coating materials.

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Section: Pdms Coatingmentioning

confidence: 99%

A Review of Coating Materials Used to Improve the Performance of Optical Fiber Sensors

Yang

Wang

et al. 2020

Sensors

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“…Hence, the PDMS film enhanced the temperature sensitivity of silica MKR structure. It also supports the fragile MKR to improve its stability and extend its service life [39]. The proposed sensor is applicable for precisely monitoring temperature fluctuation owing to its high sensitivity and miniature slice structure [39].…”

Section: Microfibre Resonator Temperature Sensorsmentioning

confidence: 99%

Polymer Optical Fibre Temperature Sensors - A Review

Soge

2020

AJR2P

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Polymer optical fibre (POF) temperature sensors are rapidly replacing conventional temperature sensors owing to their unique and attractive features, such as small size, immunity to electromagnetic interference, multiplexing, and remote sensing capabilities. The recent developments in temperature sensing using polymer optical fibres are presented. Polymer optical fibre (POF) temperature sensors of various types: macro-bend fibre sensors, microfibre resonators, fibre Bragg grating, Fabry-Perot interferometers, and POF sensors coated with zinc oxide nanorods are discussed. This study also includes dual-parameter sensors to demonstrate intrinsic sensitivities of polymer fibres to temperature, relative humidity, and strain. The prospects and challenges of POF temperature sensors in the automotive industry, biomedical sector, chemical industry, and electrical power applications are also highlighted. This review aims to help researchers in this field identify areas of further work towards improving the accuracy and operating range of POF temperature sensors.

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“…Since the MKR has good capability to improve the light-matter interaction, it is possible to realize all optical tunable devices based on the MKRs with the nonlinear material overlays [9,10,11,12,13]. In addition, the MKR-based optical sensing techniques have been intensively researched for the measurement of various physical parameters, including temperature, strain, pressure, and refractive index [14,15,16,17,18,19,20,21,22]. Table 1 summarizes various applications of the MKR-based sensing probes and their performance, including the physical parameters of the MKR, sensitivity, resolution, response time, and sensitive materials to enhance the sensitivity of the MKR to external perturbations.…”

Section: Introductionmentioning

confidence: 99%

“…Table 1 summarizes various applications of the MKR-based sensing probes and their performance, including the physical parameters of the MKR, sensitivity, resolution, response time, and sensitive materials to enhance the sensitivity of the MKR to external perturbations. A temperature sensor with high sensitivity using the polydimethylsiloxane (PDMS)-packaged MKR was reported [15,16]. High thermal coefficients of the PDMS, including thermo-optic and thermal expansion factors further increased the wavelength shift of the MKR with variations in temperature [15,16].…”

Section: Introductionmentioning

confidence: 99%

“…A temperature sensor with high sensitivity using the polydimethylsiloxane (PDMS)-packaged MKR was reported [15,16]. High thermal coefficients of the PDMS, including thermo-optic and thermal expansion factors further increased the wavelength shift of the MKR with variations in temperature [15,16]. The mechanical transverse load sensor using the PDMS-encapsulated MKR was proposed [17].…”

Section: Introductionmentioning

confidence: 99%

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Relative Humidity Sensors Based on Microfiber Knot Resonators—A Review

Han

2019

Sensors

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Recent research and development progress of relative humidity sensors using microfiber knot resonators (MKRs) are reviewed by considering the physical parameters of the MKR and coating materials sensitive to improve the relative humidity sensitivity. The fabrication method of the MKR based on silica or polymer is briefly described. The many advantages of the MKR such as strong evanescent field, a high Q-factor, compact size, and high sensitivity can provide a great diversity of sensing applications. The relative humidity sensitivity of the MKR is enhanced by concerning the physical parameters of the MKR, including the waist or knot diameter, sensitive materials, and Vernier effect. Many techniques for depositing the sensitive materials on the MKR surface are discussed. The adsorption effects of water vapor molecules on variations in the resonant wavelength and the transmission output of the MKR are described regarding the materials sensitive to relative humidity. The sensing performance of the MKR-based relative humidity sensors is discussed, including sensitivity, resolution, and response time.

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Temperature measurement using a microfiber knot ring encapsulated in PDMS

Cited by 8 publications

References 30 publications

A Review of Coating Materials Used to Improve the Performance of Optical Fiber Sensors

A Review of Coating Materials Used to Improve the Performance of Optical Fiber Sensors

Polymer Optical Fibre Temperature Sensors - A Review

Relative Humidity Sensors Based on Microfiber Knot Resonators—A Review

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