Experimental comparison of the effect of the structure on MZI fiber gas sensor performance

Nazeri, Kaveh; Ahsani, Vahid; Ahmed, Farid; Joe, Hang-Eun; Jun, Martin B. G.; Bradley, Colin

doi:10.1109/pacrim47961.2019.8985107

Cited by 3 publications

(2 citation statements)

References 34 publications

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“…The table shows that the proposed MZI configuration shows much higher sensitivity in gas sensing compared to its counterparts in the RI range of 1 to 1.02. As shown in [40], decreasing the length of HC-PCF, the sensitivity of this sensor can be further improved. The proposed sensor is fairly compact (3.3 mm) compared to other HC-PCF based RI sensors [31,32,37,38], some of which are as long as ~35 cm.…”

Section: Refractive Index Sensingmentioning

confidence: 97%

“…Ahmed et al [39] reported a highly sensitive MZI structure that uses a small stub of HC-PCF for monitoring of CO 2 ; however, a detailed study on such a configuration is necessary to better understand its performances and to explore other potential applications. Recently, we studied length-dependent performance of these devices to understand their sensing properties [40]. However, more studies are required to better understand design parameters and sensing performance of these MZI sensors.…”

Section: Introductionmentioning

confidence: 99%

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Hollow-Core Photonic Crystal Fiber Mach–Zehnder Interferometer for Gas Sensing

Nazeri

Ahmed

Ahsani

et al. 2020

Sensors

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A novel and compact interferometric refractive index (RI) point sensor is developed using hollow-core photonic crystal fiber (HC-PCF) and experimentally demonstrated for high sensitivity detection and measurement of pure gases. To construct the device, the sensing element fiber (HC-PCF) was placed between two single-mode fibers with airgaps at each side. Great measurement repeatability was shown in the cyclic test for the detection of various gases. The RI sensitivity of 4629 nm/RIU was demonstrated in the RI range of 1.0000347–1.000436 for the sensor with an HC-PCF length of 3.3 mm. The sensitivity of the proposed Mach–Zehnder interferometer (MZI) sensor increases when the length of the sensing element decreases. It is shown that response and recovery times of the proposed sensor inversely change with the length of HC-PCF. Besides, spatial frequency analysis for a wide range of air-gaps revealed information on the number and power distribution of modes. It is shown that the power is mainly carried by two dominant modes in the proposed structure. The proposed sensors have the potential to improve current technology’s ability to detect and quantify pure gases.

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Section: Refractive Index Sensingmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Hollow-Core Photonic Crystal Fiber Mach–Zehnder Interferometer for Gas Sensing

Nazeri

Ahmed

Ahsani

et al. 2020

Sensors

Self Cite

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The effect of photonic crystal fibre structure on the performance of Mach-Zehnder interferometer fibre optic gas sensors

Nazeri

Bradley

2020

Optical Fiber Technology

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Numerical analysis of the highly non-linear and ultra-sensitive modified core of a photonic crystal fiber sensor for detection of liquid analytes

Mumtaz¹,

Yaseen

Roman³

et al. 2022

J. Opt. Soc. Am. B

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A design of the highly non-linear and ultra-sensitive modified core of a photonic crystal fiber (PCF) sensor is reported for the detection of various liquid analytes. The sensor design comprises three rings of a hexagonal lattice around the liquid-infiltrated hollow core. A steric-shaped hollow core design in PCF effectively optimizes the sensor’s sensitivity and performance. The design is analyzed numerically by using the full vector finite element method with perfectly matched layers to find a rigorous solution. The proposed PCF sensor exhibits ultra-high relative sensitivity, a high power fraction, high non-linearity coefficient, low confinement loss, ultra-low chromatic dispersion, compact effective mode area, and single-mode operation in a wider wavelength range, i.e., within visible and infrared wavelength regimes. At an operating wavelength of 1.0 µm, optimum relative sensitivities of 96.37%, 97.40%, and 99.82% with high non-linear coefficients of 78.0 W − 1 k m − 1 , 66.09 W − 1 k m − 1 , and 62.57 W − 1 k m − 1 and extremely low confinement loss of ∼ 10 − 10 d B / m are obtained for water, ethanol, and benzene analytes, respectively. Further, waveguiding characteristics of the PCF sensor endorse its usage for a range of liquid analyte detections. It is a simple design and can be fabricated using existing manufacturing technologies.

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Experimental comparison of the effect of the structure on MZI fiber gas sensor performance

Cited by 3 publications

References 34 publications

Hollow-Core Photonic Crystal Fiber Mach–Zehnder Interferometer for Gas Sensing

Hollow-Core Photonic Crystal Fiber Mach–Zehnder Interferometer for Gas Sensing

The effect of photonic crystal fibre structure on the performance of Mach-Zehnder interferometer fibre optic gas sensors

Numerical analysis of the highly non-linear and ultra-sensitive modified core of a photonic crystal fiber sensor for detection of liquid analytes

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