A review: Development of novel fiber-optic platforms for bulk and surface refractive index sensing applications

Li, Jingwen

doi:10.1016/j.snr.2020.100018

Cited by 51 publications

(21 citation statements)

References 131 publications

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“…The detection limit is dependent on the composite resolutions of the fiber intensity detector, metal thickness, and RI detecting range. In general, a conventional SPR sensor based on multimode fiber has the RI resolutions of 7.69 × 10 −5 RIU with the wavelength sensitivity of 2600 nm/RIU and spectrometer resolutions of 0.2 nm [41]. Compared to the traditional multimode fiber SPR sensor, our proposed detecting method using two fixed wavelengths can improve the resolution and signal-to-noise ratio of measurements.…”

Section: Resultsmentioning

confidence: 99%

A Novel Dual-Wavelength Method for Evaluating Temperature Effect in Fiber-Optic SPR Sensors

Luo

Wang

et al. 2021

Applied Sciences

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The temperature effect is one of the critical factors to induce the resonance wavelength shift in fiber-optic surface plasmon resonance (SPR) sensors, which leads to the inaccuracy measurement of refractive index (RI) in practical applications. In this study, a novel dual-wavelength method is presented for fiber-optic SPR sensors to measure the changes of RI and temperature simultaneously in real time. A typical model of an SPR-based fiber optical sensor is constructed for theoretical analysis of temperature effect. Both the thermo-optic effect in the fiber core and phonon–electron scattering along with electron–electron scattering in the metal layer are studied systematically in the theoretical model. The linear and independent relationship, about the dependence of defined output signals on the RI and temperature, is validated by a theoretical calculation in specific dual wavelengths. A proof-of-concept experiment is conducted to demonstrate the capability of the presented dual-wavelength technique. The experimental results indicate that the presented dual-wavelength method is technically feasible and can be applied for practical application. Since the presented method only depends on the full advantages of the transfer spectrum data, it can be applied directly to the conventional single-channel fiber-optic SPR without any specific design structure of the sensor probe. The proposed method provides a new way to detect the RI under different thermal conditions and could lead to a better design for the fiber-optic SPR sensors.

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Section: Resultsmentioning

confidence: 99%

A Novel Dual-Wavelength Method for Evaluating Temperature Effect in Fiber-Optic SPR Sensors

Luo

Wang

et al. 2021

Applied Sciences

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“…Optical waveguides (or fibers) have been extensively studied to build optical BS, due to their small footprint, environmental ruggedness, high sensitivity, as well as remote sensing capabilities. Usually, such sensors are sensitive to the effective refractive index changes in the fiber surface [ 114 ]. To date, many fiber-optic refractive index sensors that are based on different detection strategies and configurations have been reported [ 114 ].…”

Section: Optical Transducingmentioning

confidence: 99%

“…Usually, such sensors are sensitive to the effective refractive index changes in the fiber surface [ 114 ]. To date, many fiber-optic refractive index sensors that are based on different detection strategies and configurations have been reported [ 114 ].…”

Section: Optical Transducingmentioning

confidence: 99%

Biosensors for Biogenic Amines: A Review

et al. 2021

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Biogenic amines (BAs) are well-known biomolecules, mostly for their toxic and carcinogenic effects. Commonly, they are used as an indicator of quality preservation in food and beverages since their presence in higher concentrations is associated with poor quality. With respect to BA’s metabolic pathways, time plays a crucial factor in their formation. They are mainly formed by microbial decarboxylation of amino acids, which is closely related to food deterioration, therefore, making them unfit for human consumption. Pathogenic microorganisms grow in food without any noticeable change in odor, appearance, or taste, thus, they can reach toxic concentrations. The present review provides an overview of the most recent literature on BAs with special emphasis on food matrixes, including a description of the typical BA assay formats, along with its general structure, according to the biorecognition elements used (enzymes, nucleic acids, whole cells, and antibodies). The extensive and significant amount of research that has been done to the investigation of biorecognition elements, transducers, and their integration in biosensors, over the years has been reviewed.

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“…The intensity of incident light decays exponentially from the boundary of evanescent field and core of optical fiber without absorption as a function of the distance. 39 The distance to which the evanescent field extends beyond the core-cladding interface is described by the penetration depth or skin depth. At this distance evanescent wave field decreases to 1/e of its value at the core-cladding interface and it is described as,…”

Section: Sensing Mechanismmentioning

confidence: 99%

Ultrasensitive polyaniline‐nickel oxide cladding modified with urease immobilized intrinsic optical fiber urea biosensor

Botewad

Gaikwad²,

Girhe³

et al. 2021

Polymers for Advanced Techs

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Herein, we report a polyaniline-nickel oxide (PANI-NiO) nanocomposite as an efficient immobilization matrix for development the optical fiber urea biosensor. Optical fiber sensing probe was developed by removing some portion of optical fiber at middle and modified with PANI-NiO matrix. After the modification of cladding removed portion, it was immobilized with enzyme urease via glutaraldehyde as a bi-functional cross-linking agent. The physicochemical and optical properties of the PANI-NiO matrix were explored by X-ray diffraction, scanning electron microscopy, ultravioletvisible, and Fourier transform infrared spectroscopic techniques. The characteristic features and performance of the developed sensor were evaluated via recording the output power and modal power distribution by means of a charge-coupled device camera. The developed urea biosensor exhibits a selective response towards urea concentrations in the linear range 1 nM-100 mM with a lower detection limit of 1 nM. Sensor recorded as a 40 days stability and response time $1 min. Thus, the obtained experimental results of the developed sensor promote its applicability with practical prospects in diverse field.

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A review: Development of novel fiber-optic platforms for bulk and surface refractive index sensing applications

Cited by 51 publications

References 131 publications

A Novel Dual-Wavelength Method for Evaluating Temperature Effect in Fiber-Optic SPR Sensors

A Novel Dual-Wavelength Method for Evaluating Temperature Effect in Fiber-Optic SPR Sensors

Biosensors for Biogenic Amines: A Review

Ultrasensitive polyaniline‐nickel oxide cladding modified with urease immobilized intrinsic optical fiber urea biosensor

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