Fiber optic mechanical deformation sensors employing perpendicular photonic crystals

Beiu, Roxana-Mariana; Beiu, Valeriu; Duma, Virgil-Florin

doi:10.1364/oe.25.023388

Cited by 8 publications

(5 citation statements)

References 39 publications

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“…Beiu et al 1077 have introduced photonic crystals (PhCs) embedded into cores of optical fibers, where they undergo mechanical deformation perpendicular to the length of the fiber. While not specifically demonstrated, it may well work as a PhC based pH sensor when using a swellable polymer matrix whose RI varies with pH values.…”

Section: Holographic Ph Sensorsmentioning

confidence: 99%

Optical Sensing and Imaging of pH Values: Spectroscopies, Materials, and Applications

2020

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This is the first comprehensive review on methods and materials for use in optical sensing of pH values and on applications of such sensors. The Review starts with an introduction that contains subsections on the definition of the pH value, a brief look back on optical methods for sensing of pH, on the effects of ionic strength on pH values and p K a values, on the selectivity, sensitivity, precision, dynamic ranges, and temperature dependence of such sensors. Commonly used optical sensing schemes are covered in a next main chapter, with subsections on methods based on absorptiometry, reflectometry, luminescence, refractive index, surface plasmon resonance, photonic crystals, turbidity, mechanical displacement, interferometry, and solvatochromism. This is followed by sections on absorptiometric and luminescent molecular probes for use pH in sensors. Further large sections cover polymeric hosts and supports, and methods for immobilization of indicator dyes. Further and more specific sections summarize the state of the art in materials with dual functionality (indicator and host), nanomaterials, sensors based on upconversion and 2-photon absorption, multiparameter sensors, imaging, and sensors for extreme pH values. A chapter on the many sensing formats has subsections on planar, fiber optic, evanescent wave, refractive index, surface plasmon resonance and holography based sensor designs, and on distributed sensing. Another section summarizes selected applications in areas, such as medicine, biology, oceanography, bioprocess monitoring, corrosion studies, on the use of pH sensors as transducers in biosensors and chemical sensors, and their integration into flow-injection analyzers, microfluidic devices, and lab-on-a-chip systems. An extra section is devoted to current challenges, with subsections on challenges of general nature and those of specific nature. A concluding section gives an outlook on potential future trends and perspectives.

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Section: Holographic Ph Sensorsmentioning

confidence: 99%

Optical Sensing and Imaging of pH Values: Spectroscopies, Materials, and Applications

2020

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“…[5,6] These splendid qualities make PCs helpful in designing functional devices, such as PC waveguides, [7] devices used to enhance transmission efficiency and resolution of images, [8] and optical sensors. [9,10] Different metamaterials, such as superconductor [11,12] graphene, [13][14][15] and plasma [16,17] have been utilized in PCs to strengthen their advantages. Plasma was first used as a unit of PCs by Japanese scholars Hojo and Mase.…”

Section: Introductionmentioning

confidence: 99%

Angular insensitive nonreciprocal ultrawide band absorption in plasma-embedded photonic crystals designed with improved particle swarm optimization algorithm

Wang

Zhang

2023

Chinese Phys. B

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Using improved particle swarm optimization algorithm(IPSO) to drive transfer matrix method(TMM), a nonreciprocal absorber with an ultrawide absorption bandwidth and angular insensitivity(UBAI) is realized in the plasma-embedded photonic crystals(PPCs) arranged by the structure composed of periodic sequence and the quasi-periodic sequence on a normalized scale. Effective dielectric function, which determines absorption of plasma, is subject to basic parameters of plasma, making absorption of proposed absorber easily be modulated by basic parameters of plasma. Compared with different quasi-periodic sequences, Octonacci sequence fully wins both in relative bandwidth and absolute bandwidth. Under further optimization using IPSO, fourteen parameters set to be optimized, absorption characteristics of proposed structure in different amounts of layers of smallest structure unit N are shown and discussed. IPSO is also used to address angular insensitive nonreciprocal ultrawide bandwidth absorption, and optimized result shows excellent unidirectional absorbability and angular insensitivity of proposed structure. The impacts of sequence number of quasi-periodic sequence M, collision frequency of plasma1 ν 1 to absorption in angle domain and frequency domain are investigated. Additionally, the impedance match theory and the interference field theory are introduced to express what the algorithm works out.

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“…Axial force measurements and control are of great importance in numerous industrial fields, nanoparticle interactions and human health monitoring [1][2][3][4]. A variety of axial force sensors have been proposed recently and can be divided into two categories: forcemeasuring platforms and installed miniature force sensors [5,6]. Installed miniature force sensors are widely used in the medical field because of their compact size.…”

Section: Introductionmentioning

confidence: 99%

An Axial Force Sensor Based on a Long-Period Fiber Grating with Dual-Peak Resonance

Luo,

Wang,

Ling

et al. 2023

Photonics

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A high-sensitivity axial force sensor with a large measurement range based on a dual-peak long-period fiber grating (LPFG) is proposed and experimentally demonstrated. Previously, the relationship between the grating period and the dual-peak wavelengths has been investigated based on the coupled-mode theory. In our experiment, the LPFG was fabricated in our laboratory by illuminating the fiber core with the aid of a 213 nm UV laser. The sensitivity of the proposed axial force sensor can reach −14.047 nm/N in the force range from 0.490 N to 4.508 N. Taking the advantages of a compact size, low cost, and large measurement range, our force sensor has more applicable abilities in harsh environments.

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Fiber optic mechanical deformation sensors employing perpendicular photonic crystals

Cited by 8 publications

References 39 publications

Optical Sensing and Imaging of pH Values: Spectroscopies, Materials, and Applications

Optical Sensing and Imaging of pH Values: Spectroscopies, Materials, and Applications

Angular insensitive nonreciprocal ultrawide band absorption in plasma-embedded photonic crystals designed with improved particle swarm optimization algorithm

An Axial Force Sensor Based on a Long-Period Fiber Grating with Dual-Peak Resonance

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