Shallow-Tapered Chirped Fiber Bragg Grating Sensors for Dual Refractive Index and Temperature Sensing

Ayupova, Takhmina; Shaimerdenova, Madina; Tosi, Daniele

doi:10.3390/s21113635

Cited by 15 publications

(6 citation statements)

References 37 publications

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“…Finally, the interference spectral response change with a small temperature change is significantly higher, providing a higher wavelength shift than the thick polymer-coated sensor, as explained in Equations (4)–(6); thickness also affects the spectral response. When comparing to other reported results ( Supplementary Materials Table S1 ) in terms of the sensor preparation as well as the performance, the developed sensors are prepared with a relatively simple preparation method, which is inexpensive, time-saving, and provides better reproducibility and comparable sensitivity[ 7 , 16 , 20 , 21 , 27 , 28 , 33 , 34 , 35 , 36 , 37 , 38 ].…”

Section: Resultsmentioning

confidence: 99%

Sequential Dual Coating with Thermosensitive Polymers for Advanced Fiber Optic Temperature Sensors

Salunkhe

Kim

2023

Sensors

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We systematically designed dual polymer Fabry–Perrot interferometer (DPFPI) sensors, which were used to achieve highly sensitive temperature sensors. The designed and fabricated DPFPI has a dual polymer coating layer consisting of thermosensitive poly (methyl methacrylate) (PMMA) and polycarbonate (PC) polymers. Four different DPFPI sensors were developed, in which different coating optical path lengths and the resultant optical properties were generated by the Vernier effect, changing the sequence of the applied polymers and varying the concentration of the coating solutions. The experimental results confirmed that the PC_PMMA_S1 DPFPI sensor delivered a temperature sensitivity of 1238.7 pm °C−1, which was approximately 4.4- and 1.4-fold higher than that of the PMMA and PMMA_PC_S1-coated sensor, respectively. Thus, the results reveal that the coating sequence, the compact thickness of the dual polymer layers, and the resultant optical parameters are accountable for achieving sensors with high sensitivity. In the PC_ PMMA-coated sensor, the PMMA outer layer has comparatively better optical properties than the PC, which might produce synergistic effects that create a large wavelength shift with small temperature deviations. Therefore, it is considered that the extensive results with the PC_PMMA_S1 DPFPI sensor validate the efficacy, repeatability, reliability, quick reaction, feasibility, and precision of the temperature readings.

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Section: Resultsmentioning

confidence: 99%

Sequential Dual Coating with Thermosensitive Polymers for Advanced Fiber Optic Temperature Sensors

Salunkhe

Kim

2023

Sensors

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“…Although the sensor was able to perform at 1% hydrogen, it was still suffering from the hysteresis effect for the Pd layer varying between 150-500 nm. In order to monitor a low hydrogen concentration below 1% another approach has been developed by reducing the diameter of the fiber up to tens of micrometers [84][85][86].…”

Section: Grating Based Hydrogen Sensormentioning

confidence: 99%

Recent Advances in Optical Hydrogen Sensor including Use of Metal and Metal Alloys: A Review

et al. 2023

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Optical sensing technologies for hydrogen monitoring are of increasing importance in connection with the development and expanded use of hydrogen and for transition to the hydrogen economy. The past decades have witnessed a rapid development of optical sensors for hydrogen monitoring due to their excellent features of being immune to electromagnetic interference, highly sensitive, and widely applicable to a broad range of applications including gas sensing at the sub-ppm range. However, the selection of hydrogen selective metal and metal alloy plays an important role. Considering the major advancements in the field of optical sensing technologies, this review aims to provide an overview of the recent progress in hydrogen monitoring. Additionally, this review highlights the sensing principles, advantages, limitations, and future development.

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“…Tapered fibers have been used to implement fiber-optic interferometers [ 35 ] or multi-parametric sensors [ 36 ] in SMFs. In MMFs, tapers are used to induce losses in the fiber without the need for bending, which allows for easier packaging of the sensor in medical devices [ 37 ].…”

Section: Cost-effective Optical Fiber Configurations For Biosensingmentioning

confidence: 99%

Cost-Effective Fiber Optic Solutions for Biosensing

et al. 2022

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In the last years, optical fiber sensors have proven to be a reliable and versatile biosensing tool. Optical fiber biosensors (OFBs) are analytical devices that use optical fibers as transducers, with the advantages of being easily coated and biofunctionalized, allowing the monitorization of all functionalization and detection in real-time, as well as being small in size and geometrically flexible, thus allowing device miniaturization and portability for point-of-care (POC) testing. Knowing the potential of such biosensing tools, this paper reviews the reported OFBs which are, at the moment, the most cost-effective. Different fiber configurations are highlighted, namely, end-face reflected, unclad, D- and U-shaped, tips, ball resonators, tapered, light-diffusing, and specialty fibers. Packaging techniques to enhance OFBs’ application in the medical field, namely for implementing in subcutaneous, percutaneous, and endoscopic operations as well as in wearable structures, are presented and discussed. Interrogation approaches of OFBs using smartphones’ hardware are a great way to obtain cost-effective sensing approaches. In this review paper, different architectures of such interrogation methods and their respective applications are presented. Finally, the application of OFBs in monitoring three crucial fields of human life and wellbeing are reported: detection of cancer biomarkers, detection of cardiovascular biomarkers, and environmental monitoring.

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Shallow-Tapered Chirped Fiber Bragg Grating Sensors for Dual Refractive Index and Temperature Sensing

Cited by 15 publications

References 37 publications

Sequential Dual Coating with Thermosensitive Polymers for Advanced Fiber Optic Temperature Sensors

Sequential Dual Coating with Thermosensitive Polymers for Advanced Fiber Optic Temperature Sensors

Recent Advances in Optical Hydrogen Sensor including Use of Metal and Metal Alloys: A Review

Cost-Effective Fiber Optic Solutions for Biosensing

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