Hollow-core negative curvature fibers for application in optical gas sensors

Silva, Artur de Araujo; Barea, Luis A. M.; Spadoti, Danilo H.; Francisco, Carlos Alberto de

doi:10.1117/1.oe.58.7.072011

Cited by 12 publications

(4 citation statements)

References 18 publications

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“…Particularly, benefited by their large hollow core, HC-NCFs can be easily filled with liquid and gas, which gives them potential applications in the field of sensing. [6][7][8][9] The surface plasmon resonance (SPR) effect can be used to enhance the sensitivity of optical fiber sensors. [10] The longitudinal oscillation of free electrons on the metal surface generates the surface plasmon wave (SPW).…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of a truncated cladding negative curvature fiber sensor based on the surface plasmon resonance effect

Zhang¹,

Yuan²,

Qiu³

et al. 2023

Chinese Phys. B

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In this paper, the refractive index (RI) sensor based on surface plasmon resonance effect is proposed using the truncated cladding negative curvature fiber (TC-NCF). The influences of the TC-NCF structure parameters on the sensing performances are investigated and compared with the traditional NCF. The simulation results show that the proposed TC-NCF RI sensor has an ultra-wide detection range from 1.16 to 1.43. The maximum wavelength sensitivity is up to 12400 nm/RIU, and the corresponding R2 of the polynomial fitting equation is 0.9999. The maximum and minimum resolutions are 2.56×10-5 and 8.06×10-6, respectively. In addition, the maximum amplitude sensitivity can be up to -379.1 RIU-1 when the RI is chosen as 1.43. The proposed TC-NCF RI sensor could be useful in biochemical medicine, environmental monitoring, and food safety.

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Section: Introductionmentioning

confidence: 99%

Numerical simulation of a truncated cladding negative curvature fiber sensor based on the surface plasmon resonance effect

Zhang¹,

Yuan²,

Qiu³

et al. 2023

Chinese Phys. B

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“…1. Real-time monitoring of harmful substances, volatile organic compound (VOC), 16 – 18 COx, 19 – 21 NOx, 22 – 24 SO2, 25 – 27 etc., 28 enables the provision of more accurate air quality information, facilitating effective measures for protection and improvement. Additionally, online monitoring of heavy metals, dissolved oxygen, pH, organic/inorganic pollutants, microorganisms, and other indicators in water is also of significant importance for ensuring water quality safety.…”

Section: Introductionmentioning

confidence: 99%

Optical fiber sensors for water and air quality monitoring: a review

Lyu,

Huang,

et al. 2023

Opt. Eng.

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Owing to their advantages of anti-electromagnetic interference, chemical resistance, high sensitivity, and fast response time, optical fiber sensors (OFSs) are widely used in biomedical, environmental monitoring, and food safety fields. We introduce the classification and principles of OFSs and summarize the applications and research progress of OFSs in water quality detection (heavy metals and microorganisms) and air quality monitoring (COx , NOx , and VOCs). Meanwhile, analytical performance, reliability, and environmental adaptability of OFSs are discussed and prospected.

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“…However, while NCHCF is a promising candidate for sensing applications, research on NCHCF based fiber sensors only began in the recent two years. For example, Wei et al proposed and investigated theoretically a temperature sensor based on a liquid filled NCHCF [ 14 ]; Silva et al theoretically demonstrated the possibility of monitoring the concentration of three toxic gases utilizing a NCHCF [ 15 ]; Cubillas et al reported that it was possible to monitor chemical reactions with very small quantum yields by using a liquid filled NCHCF [ 16 ]. Yao et al proposed a photothermal CO sensor based on a hollow-core negative curvature fiber combined with a free space Mach–Zehnder interferometer [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Negative Curvature Hollow Core Fiber Based All-Fiber Interferometer and Its Sensing Applications to Temperature and Strain

Liu

Wei

et al. 2020

Sensors

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Negative curvature hollow core fiber (NCHCF) is a promising candidate for sensing applications; however, research on NCHCF based fiber sensors starts only in the recent two years. In this work, an all-fiber interferometer based on an NCHCF structure is proposed for the first time. The interferometer was fabricated by simple fusion splicing of a short section of an NCHCF between two singlemode fibers (SMFs). Both simulation and experimental results show that multiple modes and modal interferences are excited within the NCHCF structure. Periodic transmission dips with high spectral extinction ratio (up to 30 dB) and wide free spectral range (FSR) are produced, which is mainly introduced by the modes coupling between HE11 and HE12. A small portion of light guiding by means of Anti-resonant reflecting optical waveguide (ARROW) mechanism is also observed. The transmission dips, resulting from multimode interferences (MMI) and ARROW effect have a big difference in sensitivities to strain and temperature, thus making it possible to monitor these two parameters with a single sensor head by using a characteristic matrix approach. In addition, the proposed sensor structure is experimentally proven to have a good reproducibility.

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Hollow-core negative curvature fibers for application in optical gas sensors

Cited by 12 publications

References 18 publications

Numerical simulation of a truncated cladding negative curvature fiber sensor based on the surface plasmon resonance effect

Numerical simulation of a truncated cladding negative curvature fiber sensor based on the surface plasmon resonance effect

Optical fiber sensors for water and air quality monitoring: a review

Negative Curvature Hollow Core Fiber Based All-Fiber Interferometer and Its Sensing Applications to Temperature and Strain

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