Trends and Applications of U-Shaped Fiber Optic Sensors: A Review

Tan, Alfred Jia Yee; Ng, Sing Muk; Stoddart, Paul R.; Chua, Hong Siang

doi:10.1109/jsen.2020.3014190

Cited by 40 publications

(11 citation statements)

References 95 publications

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“…3b), however, the temperature of the water solution was regularly monitored to be between 35 • C and 37 • C with laboratory thermometer. In practice, changes in refractive index and temperature can be compensated with the addition of one or more reference fibre probes [50,51]. Calibration curves (such as Fig.…”

Section: Discussionmentioning

confidence: 99%

U-shape functionalized optical fibre sensors for measurement of anaesthetic propofol

Hernández

Wang

Lee

et al. 2022

Sensors and Actuators B: Chemical

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Section: Discussionmentioning

confidence: 99%

U-shape functionalized optical fibre sensors for measurement of anaesthetic propofol

Hernández

Wang

Lee

et al. 2022

Sensors and Actuators B: Chemical

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“…Using a DCF would allow in this case the combination of OCT as a sensing mechanism with the delivery of a laser-based coagulation beam [ 34 , 104 ]. At higher adoption levels, DCF-based sensors will also play a remote monitoring role in hazardous atmospheres, where single-mode and multi-mode fibers already perform various sensing tasks [ 105 , 106 ]. In particular, they enable both single-mode and multimode propagation mechanisms through silica, a chemically inert material that maintains its shape under high-pressure [ 107 ].…”

Section: Perspective and Conclusionmentioning

confidence: 99%

Double-Clad Fiber-Based Multifunctional Biosensors and Multimodal Bioimaging Systems: Technology and Applications

Beaudette

Lamarre

et al. 2022

Biosensors

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Optical fibers have been used to probe various tissue properties such as temperature, pH, absorption, and scattering. Combining different sensing and imaging modalities within a single fiber allows for increased sensitivity without compromising the compactness of an optical fiber probe. A double-clad fiber (DCF) can sustain concurrent propagation modes (single-mode, through its core, and multimode, through an inner cladding), making DCFs ideally suited for multimodal approaches. This study provides a technological review of how DCFs are used to combine multiple sensing functionalities and imaging modalities. Specifically, we discuss the working principles of DCF-based sensors and relevant instrumentation as well as fiber probe designs and functionalization schemes. Secondly, we review different applications using a DCF-based probe to perform multifunctional sensing and multimodal bioimaging.

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“…It is well-reported that the reflectivity of FBG increases with grating length and index modulation [5,9]. Furthermore, the sensing performances of fiber waveguide-based sensors can be improved by changing their constituent material [10] or its structural deformation [11]. Structural deformation like tapering, bending, de-cladding, etc.…”

Section: Introductionmentioning

confidence: 99%

Enhanced sensing performance of tapered profile in the apodized fiber Bragg grating for detection of cancerous cells utilizing their refractive index

Maiti,

Prakash,

Singh

2023

Journal of Biophotonics

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Tapered profiles are introduced in Bessel and Blackman apodized fiber Bragg grating, and their sensing performance is theoretically estimated. Reflectivity equation of proposed apodized tapered profiles is obtained using transfer matrix method and coupled mode theory. Since the effective refractive index of proposed waveguides varies with core radius therefore amplitude distribution and penetration depth of light in surrounding are modified. It is found that exponential tapered profile with Bessel apodization shows higher sensitivity 682.5 nm/RIU, detection accuracy 3858.45, and quality parameter 1718.02 /RIU with minimum FWHM 0.3972 nm of the reflection spectra. Spectral response of the tapered fiber Bragg grating is also analyzed through group delay study. Again, exponential profile was found to be particularly effective, producing less group delay ripples 2.98 ps and is maximum slope of 42.43 degree. Hence, exponential tapered profile is demonstrated for detection of cancer cells lies between the refractive index of 1.3333 to 1.4412.This article is protected by copyright. All rights reserved.

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Trends and Applications of U-Shaped Fiber Optic Sensors: A Review

Cited by 40 publications

References 95 publications

U-shape functionalized optical fibre sensors for measurement of anaesthetic propofol

U-shape functionalized optical fibre sensors for measurement of anaesthetic propofol

Double-Clad Fiber-Based Multifunctional Biosensors and Multimodal Bioimaging Systems: Technology and Applications

Enhanced sensing performance of tapered profile in the apodized fiber Bragg grating for detection of cancerous cells utilizing their refractive index

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