Coupling independent fiber optic tilt and temperature sensor based on chirped tapered fiber Bragg grating in double-pass configuration

Osuch, Tomasz; Markowski, Konrad; Manujło, Andrzej; Jędrzejewski, Kazimierz

doi:10.1016/j.sna.2016.10.040

Cited by 28 publications

(16 citation statements)

References 18 publications

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“…Osuch et al proposed two novel optical sensors based on the linearly tapered and chirped FBG (TCFBG) inscribed by a UV laser, whose grating period co‐directionally or counter‐directionally inscribed toward taper end. The FBG co‐directionally inscribed could combine the taper‐induced chirp and the grating period chirp, forming a relatively broad reflected spectrum.…”

Section: Smf Grating Sensorsmentioning

confidence: 99%

Novel Fiber Grating for Sensing Applications

Zhang

et al. 2019

Physica Status Solidi (a)

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This review covers some kinds of novel fiber grating and their applications in sensing fields. According to the fiber structures, these novel fiber grating sensors are divided into five types: single mode fiber grating sensors, few-mode fiber grating sensors, multi-core fiber grating sensors, photonic crystal fiber grating sensors, and D-shaped fiber grating sensors. For each kind of fiber grating sensor, both long period fiber grating sensors and fiber Bragg grating sensors are introduced separately, along with their structures, sensing applications, corresponding sensing characteristics, and the advantages and disadvantages in sensing applications.

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Section: Smf Grating Sensorsmentioning

confidence: 99%

Novel Fiber Grating for Sensing Applications

Zhang

et al. 2019

Physica Status Solidi (a)

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“…In Table 2 , a list of applications is reported, outlining the case scenario, the main CFBG parameters, and the detection system. It is possible to classify the case scenarios of CFBG sensors in the following classes of applications, whereas the inherent spectral characteristic of the CFBG and the capability of detecting profiles is a key asset: Sensors for temperature measurement in thermal ablation [ 35 , 36 , 38 , 74 ]; Positioning detection of localized heat source [ 40 ]; Strain measurement in structural health monitoring [ 57 ]; Detection of damages on CFRP (carbon-fiber reinforced polymer) [ 41 , 75 , 76 ]; Measurement of velocity of shock waves [ 34 , 77 ]; Monitoring of transmission lines [ 78 ]; Detection of liquid containers inclination and level [ 53 , 79 , 80 , 81 ]; Localization and estimation of high-pressure events [ 82 ]; Distributed strain and temperature measurement [ 83 , 84 , 85 ]; Hybrid sensors [ 86 , 87 ]. …”

Section: Applications Of Cfbg Sensorsmentioning

confidence: 99%

Review of Chirped Fiber Bragg Grating (CFBG) Fiber-Optic Sensors and Their Applications

Tosi

2018

Sensors

129

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Fiber Bragg Gratings (FBGs) are one of the most popular technology within fiber-optic sensors, and they allow the measurement of mechanical, thermal, and physical parameters. In recent years, a strong emphasis has been placed on the fabrication and application of chirped FBGs (CFBGs), which are characterized by a non-uniform modulation of the refractive index within the core of an optical fiber. A CFBG behaves as a cascade of FBGs, each one reflecting a narrow spectrum that depends on temperature and/or strain. The key characteristic of CFBGs is that their reflection spectrum depends on the strain/temperature observed in each section of the grating; thus, they enable a short-length distributed sensing, whereas it is possible to detect spatially resolved variations of temperature or strain with resolution on the order of a millimeter over the grating length. Based on this premise, CFBGs have found important applications in healthcare, mechanical engineering, and shock waves analysis, among others. This work reviews the present and emerging trends in CFBG sensors, focusing on all aspects of the sensing element and outlining the application case scenarios for which CFBG sensors have been demonstrated.

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“…This sensor, which included chirp enhancement and chirp reduction structures could significantly increase the sensitivity and reduce the influence of F-P resonance formation results from higher elongation of the thinner end of the tapered FBG. After that, Osuch first designed a chirped tapered FBG in double-pass configuration [ 15 ]. This novel double-pass structure has two reflection bands, of which only one is sensitive to bending, so the tilt angle and temperature measurement can be simultaneously achieved.…”

Section: Introductionmentioning

confidence: 99%

“…Based on the investigation of the conventional four-cores FBG probes [ 10 ] and tapered FBG sensors [ 11 , 12 , 13 , 14 , 15 , 16 ], a tapered self-assembly four-cores FBG probe is proposed in this paper. This probe is manufactured using four tapered single-core FBGs through the self-assembly technique, so there is no multicore fiber fanouts in the probing system, and the signal transmission loss and cost can be significantly decreased.…”

Section: Introductionmentioning

confidence: 99%

Investigation of a Three-Dimensional Micro-Scale Sensing System Based on a Tapered Self-Assembly Four-Cores Fiber Bragg Grating Probe

Feng

Cui

Sun

et al. 2018

Sensors

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Three-dimensional micro-scale sensors are in high demand in the fields of metrology, precision manufacturing and industry inspection. To extend the minimum measurable dimension and enhance the accuracy, a tapered four-cores fiber Bragg grating (FBG) probe is proposed. The sensing model is built to investigate the micro-scale sensing characteristics of this method and the design of the tapered stylus is found to influence the accuracy. Therefore, a π/2 phase-shift point is introduced into the FBGs comprised in the probe to suppress spectrum distortion and improve accuracy. Then, the manufacturing method based on capillary self-assembly is proposed to form the probe and the critical length to form a square array for four cylindrical fibers is verified to be effective for the tapered fibers. Experimental results indicate that the design of the tapered stylus can extend the minimum measurable dimension by twofold and has nearly no influence on its sensitivity. The three-dimensional measurement repeatability is better than 31.1 nm and the stability is better than 200 nm within once measuring process. Furthermore, the measurement precision of the three-dimensional micro-scale measurement results is less than 150 nm. It would be widely used in measuring micro-scale features for industry inspection or metrology.

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Coupling independent fiber optic tilt and temperature sensor based on chirped tapered fiber Bragg grating in double-pass configuration

Cited by 28 publications

References 18 publications

Novel Fiber Grating for Sensing Applications

Novel Fiber Grating for Sensing Applications

Review of Chirped Fiber Bragg Grating (CFBG) Fiber-Optic Sensors and Their Applications

Investigation of a Three-Dimensional Micro-Scale Sensing System Based on a Tapered Self-Assembly Four-Cores Fiber Bragg Grating Probe

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