Advances on Optical Fiber Sensors

Mescia, Luciano; Prudenzano, Francesco

doi:10.3390/fib2010001

Cited by 69 publications

(34 citation statements)

References 127 publications

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“…Recently, Mescia et al presented a review work [1] introducing abundant fiber sensing structures, such as fiber Bragg grating (FBG), long period gratings (LPGs), up-tapered structure and so on. On the other hand, magnetic fluid (MF) is an attractive material, which is a kind of stable colloidal system consisting of surfactant-coated magnetic nanoparticles dispersed in a suitable liquid carrier.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Field Sensing Based on Magnetic-Fluid-Clad Fiber-Optic Structure With Up-Tapered Joints

Dong

2014

IEEE Photonics J.

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A kind of magnetic field sensor based on mode interference effect is proposed. The sensing arm consists of two special up-tapered joints formed on the traditional singlemode fiber by fusion tapering technique. Magnetic fluid is used as the cladding of the structure. The interference valley wavelength or the transmission loss of the sensing structure is sensitive to the external magnetic field, which is utilized for magnetic field sensing. The sensitivity of shift of interference valley wavelength with magnetic field can be up to 325.3 pm/mT in the range of 0-16 mT. The variation of transmission loss at valley wavelength with magnetic field has a sensitivity of À0.2121 dB/mT in the range of 2-30 mT.

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Section: Introductionmentioning

confidence: 99%

Magnetic Field Sensing Based on Magnetic-Fluid-Clad Fiber-Optic Structure With Up-Tapered Joints

Dong

2014

IEEE Photonics J.

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“…Microstructured exposed-core optical fibres (ECFs) provide a broad range of optical properties demanded by biomedical refractive index sensors intended to operate inside living organisms [9][10][11][12]. ECFs confine and guide light in a small volume of a dielectric material surrounded by longitudinal air holes ( Fig.…”

Section: Introductionmentioning

confidence: 99%

Modal interferometric refractive index sensing in microstructured exposed core fibres

2019

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Optical fibre-based sensors measuring refractive index shift in bodily fluids and tissues are versatile and accurate probes of physiological processes. Here, we suggest a refractive index sensor based on a microstructured exposed-core fibre (ECF). By considering a high refractive index coating of the exposed core, our modelling demonstrates the splitting of the guided mode into a surface sensing mode and a mode that is isolated from the surface. With the isolated mode acting as a reference arm, this two-mode one-fibre solution provides for robust interferometric sensing with a sensitivity of up to 60, 000 rad/RIU-cm, which is suitable for sensing subtle physiological processes within hard-to-reach places inside living organisms, such as the spinal cord, ovarian tract and blood vessels. © 20192. Two-mode microstructured exposed core fibreWe consider a standard ECF structure [19] (Fig. 1) that consists of a Y-shaped silica core (the refractive index n co = 1.4607, 2.2 µm size) formed by three elliptical air holes (n air = 1)

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“…[1][2][3][4][5]. Many of the fiber-optic sensors have been successfully commercialized and widely practically applied for health and safety monitoring of composite materials, large civil engineering structures, quantitative chemical process, and structural health monitoring.…”

Section: Introductionmentioning

confidence: 99%

Recent Developments in Micro-Structured Fiber Optic Sensors

Chen

et al. 2017

Fibers

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Recent developments in fiber-optic sensing have involved booming research in the design and manufacturing of novel micro-structured optical fiber devices. From the conventional tapered fiber architectures to the novel micro-machined devices by advanced laser systems, thousands of micro-structured fiber-optic sensors have been proposed and fabricated for applications in measuring temperature, strain, refractive index (RI), electric current, displacement, bending, acceleration, force, rotation, acoustic, and magnetic field. The renowned and unparalleled merits of sensors-based micro-machined optical fibers including small footprint, light weight, immunity to electromagnetic interferences, durability to harsh environment, capability of remote control, and flexibility of directly embedding into the structured system have placed them in highly demand for practical use in diverse industries. With the rapid advancement in micro-technology, micro-structured fiber sensors have benefitted from the trends of possessing high performance, versatilities and spatial miniaturization. Here, we comprehensively review the recent progress in the micro-structured fiber-optic sensors with a variety of architectures regarding their fabrications, waveguide properties and sensing applications.

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Advances on Optical Fiber Sensors

Cited by 69 publications

References 127 publications

Magnetic Field Sensing Based on Magnetic-Fluid-Clad Fiber-Optic Structure With Up-Tapered Joints

Magnetic Field Sensing Based on Magnetic-Fluid-Clad Fiber-Optic Structure With Up-Tapered Joints

Modal interferometric refractive index sensing in microstructured exposed core fibres

Recent Developments in Micro-Structured Fiber Optic Sensors

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