Intensity modulated refractive index sensor based on optical fiber Michelson interferometer

Zhou, Jiangtao; Wang, Yiping; Liao, Changrui; Sun, Bing; He, Jun; Yin, Guolu; Liu, Shen; Li, Zhengyong; Wang, Guanjun; Zhong, Xiaoyong; Zhao, Jing

doi:10.1016/j.snb.2014.11.014

Cited by 171 publications

(69 citation statements)

References 25 publications

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“…Also, the offset spliced structure could be modified by replacing the SMF with other fibers. In [276], thin core fiber (TCF) was offset spliced with a SMF to form a MI. The proposed sensor was insensitive to the temperature change and had high sensitivity for RI sensing.…”

Section: Mode Mismatched Micro-structured Devicesmentioning

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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Section: Mode Mismatched Micro-structured Devicesmentioning

confidence: 99%

Recent Developments in Micro-Structured Fiber Optic Sensors

Chen

et al. 2017

Fibers

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“…Various fabrication methods for fiber-based RI sensors have been reported in the literature [1], including surface plasmon resonance (SPR) [2,3], evanescent field [4], fiber gratings [5,6], and optical fiber interferometry [7]. However, the sensitivity of the traditional sensing techniques needs to be improved in practical applications.…”

Section: Introductionmentioning

confidence: 99%

High Sensitivity Refractive Index Sensor by D-Shaped Fibers and Titanium Dioxide Nanofilm

Tien

Lin

2018

Advances in Condensed Matter Physics

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This paper presents a high sensitivity liquid refractive index (RI) sensor based on lossy mode resonance (LMR) effect. The Dshaped fibers coated with nanosized titanium dioxide (TiO 2 ) thin film as a sensing head were submerged into different refractive index solutions. The variations in the optical spectrum of the proposed RI sensor with different refractive index solutions were measured. The LMR resonance peaks were used to determine the wavelength shifts with different refractive index solutions. The results show that the optical spectrum peaks shifted towards the longer wavelength side with increasing the refractive index. For the proposed fiber sensing head with a polishing residual thickness of 72 m, the maximum shift of the absorption peak was 264 nm. The sensitivity of the proposed RI sensor was 4122 nm/RIU for the refractive index range from 1.333 to 1.398.

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“…1 . More recently, chip-scale photonic devices have also been used in such applications 2 , including localized surface plasma [3][4][5] , photonic crystals [6][7][8] , micro-cavities 9,10 , waveguides [11][12][13][14] , interferometers [15][16][17] , and nano-fibers [18][19][20][21] . The intrinsic mechanism of RI sensor is detecting the parameters which are determined by diffraction characteristics changing due to the varieties of cladding RI of sensors.…”

Section: Introductionmentioning

confidence: 99%

Light propagation in strip and slot waveguide arrays for sensing

Fan

Wang

et al. 2016

SPIE Proceedings

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Light propagation in strip and slot waveguide arrays for sensing are proposed and analyzed with a new theory of quantum walk. The waveguide arrays are designed on silicon-on-insulator and can be fabricated with mature and costefficient complementary metal-oxide semiconductor technology. A new slot waveguide array modified by conventional strip waveguide array with electric field mainly confined in the cladding region is investigated. Quantum walks have an exact mapping to classical phenomena as verified by experiments using bright laser light, so that they are introduced in our work as theoretical foundation. We take the width of waveguide of 450 nm and the coupling distance of 200 nm for strip waveguide array, and 420 nm and 180 nm for slot waveguide array, but with a 100nm slot in the center of waveguide. At last the waveguide array covered by a thin layer of graphene is investigated, which brings higher sensing property as well as a much better biocompatibility. With the monochrome light injection the intensity distribution at the end of the arrays changes with the refractive index of the sensing area (cladding region) and it can be explained by quantum walks theory. The designed waveguide arrays can possess compact footprint and high refractive index resolution, reaching 1E-11 RIU theoretically.

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Intensity modulated refractive index sensor based on optical fiber Michelson interferometer

Cited by 171 publications

References 25 publications

Recent Developments in Micro-Structured Fiber Optic Sensors

Recent Developments in Micro-Structured Fiber Optic Sensors

High Sensitivity Refractive Index Sensor by D-Shaped Fibers and Titanium Dioxide Nanofilm

Light propagation in strip and slot waveguide arrays for sensing

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