Differential transmissive fiber‐optic distance sensor

Shan, Mingguang; Min, Rui; Zhong, Zhi; Ying, Wang; Hao, Bengong; Zhang, Yabin

doi:10.1002/mop.28275

Cited by 5 publications

(3 citation statements)

References 15 publications

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“…POF-based sensing techniques can be classified on intensity modulation sensing, Brillouin scattering, and wavelength sensitivity grating devices. Bilro et al [28] presented a review paper about intensity modulation sensing, where all sensors include a light source, an optical fiber, and an optical spectrum analyzer or a photodetector when the accuracy is not so critical, such as structural health monitoring [27,29], deformation monitoring [30], medical instrument [31][32][33][34], environment monitoring [35,36], mechanical measurement [37][38][39], and chemical detection [40,41]. The second technique, based on Brillouin scattering in POFs [26], is mainly focused towards distributed sensing, such as structural health monitoring by POF strain sensor technology [42], according to the fundamental properties of Brillouin scattering in POF as reviewed by Mizuno et al [43].…”

Section: Introductionmentioning

confidence: 99%

Latest Achievements in Polymer Optical Fiber Gratings: Fabrication and Applications

2019

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Section: Introductionmentioning

confidence: 99%

Latest Achievements in Polymer Optical Fiber Gratings: Fabrication and Applications

2019

Self Cite

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“…Guin [ 16 ] developed an optical fiber sensor for joint angular measurements. Mingguang [ 17 , 18 ] presented a fiber bundle angular displacement sensor with two parallel multimode fibers placed on both sides of one emitting fiber, although the mothed improved the angular sensitivity without reducing the linear angular range, leaving the axial vibration effects on measurement results out of account, what’s more, the current sensor measurement range still need to improved.…”

Section: Introductionmentioning

confidence: 99%

A Differential Reflective Intensity Optical Fiber Angular Displacement Sensor

Jia

Yan

et al. 2016

Sensors

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In this paper, a novel differential reflective intensity optical fiber angular displacement sensor was proposed. This sensor can directly measure the angular and axial linear displacement of a flat surface. The structure of the sensor probe is simple and its basic principle was first analyzed according to the intensity modulation mechanisms. Secondly, in order to trim the dark output voltage to zero, the photoelectric conversion circuit was developed to adjust the signals. Then, the sensor model including the photoelectric conversion circuit has been established, and the influence of design parameters on the sensor output characteristic has been simulated. Finally, the design parameters of the sensor structure were obtained based on the simulation results; and an experimental test system was built for the sensor calibration. Experimental results show that the linear angular range and the sensitivity of the sensor were 74.4 and 0.051 V/°, respectively. Its change rules confirm the operating principle of the sensor well.

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“…The design has one emitting fibre and twin receiving fibres (bi-core), which enhances the sensitivity and linear range through subtraction of two receiving optical power signals. Moreover, a theoretical model was developed to predict the distance that is intended to be measured by the sensor [30]. Spectral characteristics and performance of the bi-core optical fibre were studied practically in both reflective and transmissive configurations [31].…”

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confidence: 99%

Performance analysis of transmissive modified cladding optical fibre sensors

Jahromi

2021

IET Optoelectronics

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Optical fibre sensors with modified cladding have been a topic of great interest for decades. Thanks to the new techniques of fabricating nanostructured films, this interest has been renewed. Although there have been many increases in published experimental research, no comprehensive theoretical formulation of the structure is reported in the literature. In this study, a general theory for transmissive modified cladding optical fibre sensors is presented. The model is formulated based on the electromagnetic fields and optical power in the core and cladding of a step-index fibre. The model considers various parameters, especially the radius of the optical fibre core, modified cladding refractive index, and light wavelength. The sensitivity, response, and optical transmission of the sensor are analysed as a function of the parameters. The analyses show that optical transmission reduces dramatically when the modified cladding refractive index approaches the refractive index of the core of the fibre and results in higher sensor response and sensitivity. Increasing the core radius of the fibre will result in lower sensor response with higher sensitivity. Both parameters will increase for a light with a larger wavelength. The results are in good agreement with experimental evidence.

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Differential transmissive fiber‐optic distance sensor

Cited by 5 publications

References 15 publications

Latest Achievements in Polymer Optical Fiber Gratings: Fabrication and Applications

Latest Achievements in Polymer Optical Fiber Gratings: Fabrication and Applications

A Differential Reflective Intensity Optical Fiber Angular Displacement Sensor

Performance analysis of transmissive modified cladding optical fibre sensors

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