High sensitivity all-optical sensor for detecting toxic gases using hollow-core photonic crystal fiber composed of magnesium fluoride

Dashtban, Zahra; Salehi, Mohammad Reza; Abiri, Ebrahim

doi:10.1016/j.yofte.2022.102958

Cited by 5 publications

(4 citation statements)

References 42 publications

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“…Confinement loss in this setup is 3.81 × 10 −3 . All the sensors mentioned here are made of SiO 2 except for the sensor proposed by Dashtban et al, 32 which is made of MgF 2 . The proposed sensor shows overall higher relative sensitivity with lower confinement loss, which is best for gas sensors based on PCF.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

“…The sensor showed relative sensitivity of 57% and confinement loss of 4.37×10−2. Dashtban et al 32 . designed a PCF-based sensor with a circular hexagonal arrangement in cladding and core region.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

“…Confinement loss in this setup is 3.81×10−3. All the sensors mentioned here are made of SiO2 except for the sensor proposed by Dashtban et al., 32 which is made of MgF2.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

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Hollow core photonic crystal fiber based carbon monoxide sensor design applicable for hyperbilirubinemia diagnosis

2023

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.One of the modern ways to diagnose diseases is through exhale gas of patients, which is non-invasive and therefore desirable to doctors. The composition of exhaled breath contains valuable information for identifying hyperbilirubinemia disease. The accumulation of bilirubin and its lack of excretion causes jaundice, and the production of bilirubin has a direct relationship with exhaled carbon monoxide (CO). A CO diagnostic sensor based on a photonic crystal fiber (PCF) that can detect hyperbilirubinemia has been designed. This method can be used repeatedly to detect and treated jaundice in time. The PCF is designed as a hexagon. The holes in the cladding are circular and the holes in the core are circular and oval. Finite element method is used to do all the numerical simulations. COMSOL Multiphysics software was used to obtain the results. In this setup, CO absorption wavelength is 1.567 μm, and the relative sensitivity of 64.28% is reported with confinement loss of 3.81 × 10 − 3 dB / m.

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Section: Simulation Results and Discussionmentioning

confidence: 99%

Section: Simulation Results and Discussionmentioning

confidence: 99%

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Hollow core photonic crystal fiber based carbon monoxide sensor design applicable for hyperbilirubinemia diagnosis

2023

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“…The simulation outcomes indicated that the relative sensitivity and confinement loss are 63% and 1.98 × 10 −4 dB/m, respectively, at the wavelength of λ = 1.544 µm. In [21], the designed toxic gas sensor structure consists of air holes around the core, with a so-called quasi-crystalline arrangement. The relative sensitivity and confinement loss are near 50% and 2.1 × 10 −6 dB/m at 1.55 µm.…”

Section: Introductionmentioning

confidence: 99%

The Design of a Photonic Crystal Fiber for Hydrogen Cyanide Gas Detection

Pourfathi Fard,

Makouei,

Danishvar

et al. 2024

Photonics

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Hydrogen cyanide gas is a dangerous and fatal gas that is one of the causes of air pollution in the environment. A small percentage of this gas causes poisoning and eventually death. In this paper, a new PCF is designed that offers high sensitivity and low confinement loss in the absorption wavelength of hydrogen cyanide gas. The proposed structure consists of circular layers that are located around the core, which is also composed of circular microstructures. The finite element method (FEM) is used to simulate the results. According to the results, the PCF gives a high relative sensitivity of 65.13% and a low confinement loss of 1.5 × 10−3 dB/m at a wavelength of 1.533 µm. The impact of increasing the concentration of hydrogen cyanide gas on the relative sensitivity and confinement loss is investigated. The high sensitivity and low confinement losses of the designed PCF show that this optical structure could be a good candidate for the detection of this gas in industrial and medical environments.

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Effects of selectively thickening core wall on birefringence and loss in polarization-maintaining hollow core photonic bandgap fiber

Tian,

Lou,

Gao

et al. 2024

Opt Quant Electron

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High sensitivity all-optical sensor for detecting toxic gases using hollow-core photonic crystal fiber composed of magnesium fluoride

Cited by 5 publications

References 42 publications

Hollow core photonic crystal fiber based carbon monoxide sensor design applicable for hyperbilirubinemia diagnosis

Hollow core photonic crystal fiber based carbon monoxide sensor design applicable for hyperbilirubinemia diagnosis

The Design of a Photonic Crystal Fiber for Hydrogen Cyanide Gas Detection

Effects of selectively thickening core wall on birefringence and loss in polarization-maintaining hollow core photonic bandgap fiber

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