Refractive index and temperature sensors based on no-core fiber cascaded with long period fiber grating

Zhang, Jianming; Pu, Shengli; Rao, Jie; Yao, Tianyu

doi:10.1080/09500340.2018.1424360

Cited by 26 publications

(7 citation statements)

References 32 publications

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“…However, PCF polishing is not easy and requires very precise alignment and control tools in order to obtain the desired results, which has severely limited the experimental realization of this kind of refractometers. On the other hand, the broad range of combinations between polishing depth, PCF structure, and resonance‐supporting material has given numerous theoretical studies, summarized in Table , which shows the potential of this structure for gas, chemical, and biosensing applications.…”

Section: Refractometers Based On Thin‐film Resonancesmentioning

confidence: 99%

A Comprehensive Review of Optical Fiber Refractometers: Toward a Standard Comparative Criterion

Urrutia

Villar

Zubiate

et al. 2019

Laser & Photonics Reviews

142

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Thanks to the peculiarities of optical fiber and its ability to be combined with nanotechnology, precise and accurate measurements of the changes in optical properties (i.e., refractive index) of the medium surrounding the fiber are becoming possible with a high degree of performance. Thus, optical fiber sensors (OFSs) are increasingly finding applications in biochemistry and biomedicine. Here, all types of optical fiber refractometers are covered, and they are classified into three main groups: interferometers, grating‐based structures, and resonance‐based structures (the resonance is induced by coating the optical fiber sensor with a thin film). The performance of these different structures is compared by means of the most common parameters: sensitivity, full width at half minimum or maximum, figure of merit, and quality factor. The aim here is to provide a reliable and easy‐to‐use tool to compare the performance of the most recent developments on fiber optic refractometers.

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Section: Refractometers Based On Thin‐film Resonancesmentioning

confidence: 99%

A Comprehensive Review of Optical Fiber Refractometers: Toward a Standard Comparative Criterion

Urrutia

Villar

Zubiate

et al. 2019

Laser & Photonics Reviews

142

View full text Add to dashboard Cite

show abstract

“…Splicing of fibers with dissimilar modal fields. [19][20][21][22][23][24][25] Fibers with dissimilar modal fields are spliced together to facilitate the transfer of optical power from one mode of the lead fiber to two or more modes of the sensing fiber. Typical examples representing this group include sensor structures that utilize splices between single-mode and step-index few-mode or multimode fibers or core-less fibers, as shown in Fig.…”

Section: Multiparameter Sensors Based On Mach-zehnder and Michelson Imentioning

confidence: 99%

“…MZIs are encountered most frequently in sensors for simultaneous measurement of RI and temperature. The two most often reported approaches utilize either a single MZI 23,24,27,29,30,[33][34][35][36][37] or a cascading of two MZIs. [19][20][21]26,31,38 a.…”

Section: Multiparameter Sensors Based On Mach-zehnder and Michelson Imentioning

confidence: 99%

“…Another example of a single MZI configuration for simultaneous RI and temperature measurement is presented in Ref. 24, where spectral shift and amplitude of a selected peak/dip are correlated to the RI and temperature (here, a peak/dip amplitude modulation is used in addition to spectral peak position to determine RI and temperature).…”

Section: Multiparameter Sensors Based On Mach-zehnder and Michelson Imentioning

confidence: 99%

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Multiparameter fiber-optic sensors: a review

2019

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Needs for sensor miniaturization, versatile sensing solutions, and improved measurements' performances in difficult operating environments have recently driven considerable research in optical fiber sensor for multiparameter measurements. Multiparameter sensors not only enable new sensors' functionalities, but can also improve achievable measurement performances for some frequently measured parameters considerably. This study provides a review of work in the field of miniature fiber-optic sensors that allows independent and simultaneous measurements of two or more different physical or chemical parameters. Sensor designs and corresponding signal processing schemes are reviewed and compared.

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“…Long period fiber gratings (LPFGs) are attractive devices for sensor applications owing to their unique advantages: electro-magnetic immunity, nonexplosiveness, and potential for remote and multiplexing operations [1,2]. Cascaded-LPFGs that connect two LPFGs in series are promising sensors owing to their high sensitivity for physical parameters such as torsion, temperature, or the refractive index of the surrounding medium [3,4,5]. Such high sensitivity for physical parameters arises from a recoupling between core and cladding modes, causing interference between the core and cladding modes [6,7].…”

Section: Introductionmentioning

confidence: 99%

Mode recoupling between core and cladding modes of cascaded-LPFGs fabricated with heat-shrinkable tube employing a thin confinement layer

et al. 2019

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Cascaded long period fiber gratings (LPFGs) fabricated with heat-shrinkable tube, screw, and single-mode fiber are proposed herein that employ a thin confinement layer on the bare fiber. The transmittance of a proposed cascaded-LPFG is theoretically and experimentally investigated regarding the cladding mode loss. By employing the confinement layer on the cladding of the proposed LPFGs, mode recoupling between core and cladding modes is successfully induced. Our cascaded-LPFG has potential application for the simple and low-cost optical filters and for the optical sensors monitoring vibration, refractive index, or temperature.

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Refractive index and temperature sensors based on no-core fiber cascaded with long period fiber grating

Cited by 26 publications

References 32 publications

A Comprehensive Review of Optical Fiber Refractometers: Toward a Standard Comparative Criterion

A Comprehensive Review of Optical Fiber Refractometers: Toward a Standard Comparative Criterion

Multiparameter fiber-optic sensors: a review

Mode recoupling between core and cladding modes of cascaded-LPFGs fabricated with heat-shrinkable tube employing a thin confinement layer

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