Double-Side Polished Fiber SPR Sensor for Simultaneous Temperature and Refractive Index Measurement

Weng, Sijun; Li, Pei; Liu, Chao; Wang, Jianshuai; Li, Jing; Ning, Tigang

doi:10.1109/lpt.2016.2575926

Cited by 56 publications

(30 citation statements)

References 22 publications

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“…Surface plasmon resonance (SPR) occurs when an incident light wave excites oscillations of free electrons at the boundary between two materials, which possess opposite signs of real parts of their dielectric functions (most typical examples are metal-dielectric interfaces). Multiparameter fiber-based SPR sensors are usually built in a way to remove part of the fiber's cladding locally, or using D-fibers, 153,154 by coupling light into the cladding 155,156 as shown in Fig. 44, by fiber tapering, or using photonics crystal fibers (PCF) 157 with the goal to allow for local access to the optical field propagating along the fiber.…”

Section: Multiparameter Sensors Based On Combinations Of Interferometmentioning

confidence: 99%

Multiparameter fiber-optic sensors: a review

2019

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Needs for sensor miniaturization, versatile sensing solutions, and improved measurements' performances in difficult operating environments have recently driven considerable research in optical fiber sensor for multiparameter measurements. Multiparameter sensors not only enable new sensors' functionalities, but can also improve achievable measurement performances for some frequently measured parameters considerably. This study provides a review of work in the field of miniature fiber-optic sensors that allows independent and simultaneous measurements of two or more different physical or chemical parameters. Sensor designs and corresponding signal processing schemes are reviewed and compared.

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Section: Multiparameter Sensors Based On Combinations Of Interferometmentioning

confidence: 99%

Multiparameter fiber-optic sensors: a review

2019

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“…Apart from the RI changing of the adhesive, the gold layer is also affected by the change of temperature [27,28]. The complex permittivity of gold layer can be described as [29], εmetal(T)=ε∞−ωd(T)2ω2−ωγd(T)normali…”

Section: Temperature Sensingmentioning

confidence: 99%

Temperature Sensor Based on Side-Polished Fiber SPR Device Coated with Polymer

Liu

Cao

Zhang

et al. 2019

Sensors

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A highly sensitive temperature sensor based on surface plasmon resonance (SPR) of a side-polished single mode fiber is demonstrated. The sensor consists of a gold film coated side-polished fiber covered by a layer of UV-curable adhesive. Before introducing the UV-curable adhesive, the gold-coated fiber exhibits refractive index (RI) sensitivity of 1691.6 nm/RIU to 8800 nm/RIU in the range of 1.32 to 1.43. The resonant wavelength of the SPR sensor shifts to 650 nm when the adhesive is coated on the gold film, and is fixed at about 725 nm when the adhesive is cured. Due to the high thermo-optic and thermal expansion coefficient of the adhesive, the sensor structure achieves a temperature sensitivity of −0.978 nm/°C between 25 °C and 100 °C. The proposed optical fiber SPR sensor is simple, highly sensitive and cost effective, which may find potential applications for temperature measurements in the biomedical and environmental industries.

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“…To overcome the above issues, single fiber optic sensors capable of monitoring index and temperature have been proposed in the literature. These include long-period gratings [2,3], Bragg gratings [4][5][6][7][8][9][10], single-cavity Fabry-Perot interferometers fabricated with polymer [11] or by fusion splicing [12], and metal-coated fibers [13,14] among others. The main disadvantage of grating-based sensors is their poor sensitivity for refractive indices below 1.4 or their expensive interrogation.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Sensing of Refractive Index and Temperature With Supermode Interference

Flores-Bravo

Fernandez

Lopez

et al. 2021

J. Lightwave Technol.

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In general, a sensor is used to monitor a single parameter only, and in many cases, a reference sensor is necessary to compensate the effect of temperature. Here, we demonstrate that a single supermode interferometer is capable of monitoring two parameters simultaneously. Said interferometer was fabricated with a segment of strongly coupled multicore fiber fusion spliced at the end of a standard single mode fiber. The free end of the multicore fiber was flat, thus, it behaved as a low reflectivity mirror whose reflection depended on the external refractive index. The reflection spectrum of our supermode interferometer consisted of well-defined periodic maxima and minima whose values and position varied when the interferometer was exposed to refractive index and temperature changes. In the Fourier domain, the changes of the interference pattern can be decoded easily. We demonstrate that the supermode interferometer here proposed can be useful to measure the thermo-optic coefficient of a sample. An important advantage of the device reported here is that the length of the multicore fiber is not determinant on the performance of the sensor. In addition, the device can be reused multiple times.

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Double-Side Polished Fiber SPR Sensor for Simultaneous Temperature and Refractive Index Measurement

Cited by 56 publications

References 22 publications

Multiparameter fiber-optic sensors: a review

Multiparameter fiber-optic sensors: a review

Temperature Sensor Based on Side-Polished Fiber SPR Device Coated with Polymer

Simultaneous Sensing of Refractive Index and Temperature With Supermode Interference

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