Design and Investigation of a High-Sensitivity PCF Sensor for the Detection of Sulfur Dioxide

Nizar, S. Mohamed; Caroline, Elizabeth; Krishnan, Prabu

doi:10.1007/s11468-021-01473-y

Cited by 5 publications

(1 citation statement)

References 25 publications

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“…To detect the concentration of SO 2 , Nizar et al [98] designed two photonic crystal fiber (PCF) sensors for SO 2 detection, both composed of an outer layer of 24 pores in two layers and an inner envelope of 18 pores in one layer. The sensors were divided into horizontal (H-PCF) and vertical (V-PCF) types based on the placement of the pores in the outer layer [Fig.…”

Section: Hc-pcf Gas Sensorsmentioning

confidence: 99%

Recent Advances in Fiber-Optic Sensors for the Detection of Inorganic Acidic Gases

Kong,

Gong,

Zhong

et al. 2024

Photonic Sens

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An acidic gas is an important basic chemical raw material used for synthesizing fertilizers, insecticides, explosives, dyes, and salts. Alternatively, inorganic acidic gases that leak into the air have harmful effects on the human health, infrastructure, and cultural relics. Therefore, the demand for inorganic acidic gas sensors for air quality monitoring and management has continuously increased, enabling the development of various sensing technologies. Among them, fiber-optic sensors are promising for acidic gas detection because of their excellent in-situ measurement, resistance to corrosion, anti-electromagnetic interference, long service life, and smart structure. In particular, fiber-optic sensors have proven to be very useful for the in-situ detection and distributed monitoring of multiple gas parameters. However, the sensitivity, selectivity, repeatability, and limits of detection of these sensors can be improved to achieve acceptable performance levels for practical applications. In this review, we introduce fiber-optic sensors based on structured optical fibers and fiber gratings for detecting H2S, SO2, NO2, CO2, and N2O. The structures of the sensing regions, gas-sensitive materials, and measurement principles of these sensors are presented. The sensitivity, selectivity, limit of detection, and response time of the sensors are summarized. Finally, the future of fiber-optic sensors for the detection of inorganic acidic gases is discussed.

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Section: Hc-pcf Gas Sensorsmentioning

confidence: 99%

Recent Advances in Fiber-Optic Sensors for the Detection of Inorganic Acidic Gases

Kong,

Gong,

Zhong

et al. 2024

Photonic Sens

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Photonic crystal fiber sensor structure with vertical and horizontal cladding for the detection of hazardous gases

Nizar,

Britto,

Michael

et al. 2023

Opt Quant Electron

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Identification of four detrimental chemicals using square-core photonic crystal fiber in the regime of THz

Almawgani

Alhamss

Taya

et al. 2023

Journal of Applied Physics

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Numerous techniques and technologies have been proposed for the detection and identification of hazardous chemicals that can harm the lungs and respiratory system as well as the central nervous system and kidneys when inhaled. Most practical techniques can be carried out by extraordinary professionals in well-equipped facilities. A reliable, simple, highly sensitive, and feasible sensing technique is still required. A potential sensor for these harmful chemicals is the photonic crystal fiber (PCF), which achieves several unique properties. A square-core PCF sensor is proposed in this work for the detection of detrimental gases (tetra-chloro silane, tetra-chloro methane, turpentine, and tin terra-chloride) in the THz region. The cladding region is divided into three rings, and each ring has rectangular and square air holes. Within the operating region, we have found a relatively high sensitivity of 96.185% along with 95.407% core power fraction, 0.2211 numerical aperture, and a low effective area of 154 470 μm2 at 1.9 THz frequency. Ignorable confinement loss of 3.071 × 10−14 cm−1 and effective material loss of 0.007 72 cm−1 have been also found. Additionally, the current manufacturing techniques guarantee the viability of the proposed PCF sensor’s manufacture. These obtained results demonstrate that the proposed sensor can be effectively employed for applications involving hazardous chemical compounds, gases, and biosensing.

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Design and Investigation of a High-Sensitivity PCF Sensor for the Detection of Sulfur Dioxide

Cited by 5 publications

References 25 publications

Recent Advances in Fiber-Optic Sensors for the Detection of Inorganic Acidic Gases

Recent Advances in Fiber-Optic Sensors for the Detection of Inorganic Acidic Gases

Photonic crystal fiber sensor structure with vertical and horizontal cladding for the detection of hazardous gases

Identification of four detrimental chemicals using square-core photonic crystal fiber in the regime of THz

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