A Highly-Sensitive Temperature-Sensor Based on a Microfiber Knot-Resonator Packaged in Polydimethylsiloxane

Dang, Hongtao; Chen, Mingshu; Li, Jin

doi:10.1109/jphot.2020.3047792

Cited by 8 publications

(4 citation statements)

References 27 publications

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“…By Vernier effect, high temperature sensitivity of about −3.5 nm/ • C is reached. In addition, Dang et al designed an MKR encapsulated in PDMS with sensitivity of −8.48 nm/ • C in 2020 [61]. By polymer encapsulation, not only is the sensitivity improved but the stability of the MKR is also improved significantly.…”

Section: Temperature Sensing and Measurement Based On Msmentioning

confidence: 99%

Review of Optical Fiber Sensors for Temperature, Salinity, and Pressure Sensing and Measurement in Seawater

Liang

Wang

Zhang

et al. 2022

Sensors

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Temperature, salinity, and pressure (TSP) are essential parameters for the ocean. Optical fiber sensors (OFSs) have rapidly come into focus as an ocean detection technology in recent years due to their advantages of electromagnetic interference, light weight, low cost, and no waterproof requirement. In this paper, the most recently developed TSP sensors for single parameter and multi-parameter TSP sensing and measurement based on different OFSs are reviewed. In addition, from the practical point of view, encapsulation methods that protect fibers and maintain the normal operation of OFSs in seawater, and the response time of the OFS, are addressed. Finally, we discuss the prospects and challenges of OFSs used in marine environments and provide some clues for future work.

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Section: Temperature Sensing and Measurement Based On Msmentioning

confidence: 99%

Review of Optical Fiber Sensors for Temperature, Salinity, and Pressure Sensing and Measurement in Seawater

Liang

Wang

Zhang

et al. 2022

Sensors

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“…Tapered-fiber-based photonic device microfiber knot resonators ( MKRs , tapered fiber knotting) are one of the research hotspots in the field of phase fiber sensors. MKR s have the advantages of strong anti-interference, a fast response speed, high resolution, a small size, and stable measurement; thus, they have attracted much attention in the field of fiber optic sensors [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive Photothermal Fiber Sensor Based on MXene Device and Vernier Effect

Chen

Li-xin

et al. 2022

Nanomaterials

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A photothermal fiber sensor based on a microfiber knot resonator (MKR) and the Vernier effect is proposed and demonstrated. An MXene Ti3C2Tx nanosheet was deposited onto the ring of an MKR using an optical deposition method to prepare photothermal devices. An MXene MKR and a bare MKR were used as the sensing part and reference part, respectively, of a Vernier-cascade system. The optical and photothermal properties of the bare MKR and the MXene MKR were tested. Ti3C2Tx was applied to a photothermal fiber sensor for the first time. The experimental results showed that the modulation efficiency of the MXene MKR was 0.02 nm/mW, and based on the Vernier effect, the modulation efficiency of the cascade system was 0.15 nm/mW. The sensitivity was amplified 7.5 times. Our all-fiber photothermal sensor has many advantages such as low cost, small size, and good system compatibility. Our sensor has broad application prospects in many fields. The proposed stable MKR device based on two-dimensional-material modification provides a new solution for improving the sensitivity of optical fiber sensors.

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“…Fiber optic sensors that have merits of electromagnetic resilience, chemical-corrosion resistance, remote-sensing ability have been widely studied to measure gas [1,2], humidity [3][4][5], temperature [6][7][8], magnetic field [9], and biological parameters [10]. Fiber optic sensors based on miniature microfiber resonators, which have advantages of compact size, strong evanescent field, low transmission loss, high Q-factor, and great flexibility, have attracted great research interest in the recent decade [11].…”

Section: Introductionmentioning

confidence: 99%

Systematic investigation of spectral characteristics and sensing characteristics of microfiber knot resonator

Xia¹,

Liu²,

Ying³

2022

J. Opt.

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In this work, we systematically study the transmission spectral characteristics of the microfiber knot resonator (MKR) both in simulation and in an experiment. The transmission spectrum shows several possible phenomena, including dominating resonance, dominating interference, the coexistence of resonance and interference with different intensity ratios, and resonance with Vernier effect. The transmission spectra with various shapes are obtained in simulation by adjusting parameters like fractional coupling intensity loss, intensity coupling ratio, and propagation constants of different modes. The relationship between the transmission spectrum and the size of the resonant ring is studied by reducing the diameter of the resonant ring and analyzing the corresponding transmission spectrum. The performance of a polydimethylsiloxane-coated MKR in refractive index and temperature measurement is also investigated, and the responses of the transmission spectrum, the extracted interference spectrum, the extracted resonance spectrum, the extracted envelope spectrum of Vernier effect are all analyzed, indicating that these spectra have similar responses to the variation of refractive index or temperature. Linear fit indicates that the sensitivities of the transmission spectrum to refractive index and temperature are about 1264.09 nm/RIU and -2.60 nm/℃, respectively. This systematic and comprehensive study will provide a helpful guideline for understanding, analyzing and designing MKR-based devices with desired spectral characteristics to meet different application requirements.

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A Highly-Sensitive Temperature-Sensor Based on a Microfiber Knot-Resonator Packaged in Polydimethylsiloxane

Cited by 8 publications

References 27 publications

Review of Optical Fiber Sensors for Temperature, Salinity, and Pressure Sensing and Measurement in Seawater

Review of Optical Fiber Sensors for Temperature, Salinity, and Pressure Sensing and Measurement in Seawater

Highly Sensitive Photothermal Fiber Sensor Based on MXene Device and Vernier Effect

Systematic investigation of spectral characteristics and sensing characteristics of microfiber knot resonator

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