Refractive index Mach–Zehnder interferometer sensor based on tapered no-core fiber

Zhao, Yang; Tong, Zhengrong; Zhang, Weihua; Zhang, Jietong; Li, Jiaxin; Wang, Xue

doi:10.1088/1555-6611/abe241

Cited by 10 publications

(3 citation statements)

References 16 publications

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“…The Mach-Zehnder interferometer (MZI) structure holds immense significance in sensing applications due to its ability to efficiently manipulate and detect light signals [10,11]. This structure utilizes the principle of interference to measure changes in optical properties, making it highly sensitive to external stimuli such as temperature, pressure, and refractive index variations [12][13][14]. Its compact size, low power consumption, and high sensitivity make it ideal for a wide range of sensing applications, including environmental monitoring, biomedical diagnostics, and industrial process control [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Loop-Terminated Mach-Zehnder Interferometer Integrated with Functional Polymer for CO<sub>2</sub> Gas Sensing

Butt

2024

Preprint

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In this work, a numerical study on the loop-terminated Mach-Zehnder interferometer (LT-MZI) structure for CO2 gas sensing application is carried out via the finite element method. The sensing arm is covered with a polyhexamethylene biguanide (PHMB) polymer which is highly receptive to CO2 gas. The refractive index of the host material decreases due to the absorption of the CO2 gas resulting in a shift in the interference pattern of the LT-MZI structure. As a result, a redshift in the wavelength is observed in the transmission spectrum of the device. The sensitivity of the device is estimated at 7.63 pm/ppm, 34.46 pm/ppm and 74.78 pm/ppm for the sensing arm length of 5 µm, 10 µm, and 15 µm, respectively. The sensitivity can be further enhanced, however at the cost of the bigger footprint of the device. Utilizing the innovative sensor design, a comprehensive range of CO2 gas concentrations spanning from 0 to 524 ppm is successfully detected. This compact and highly sensitive device serves as a vital tool for monitoring indoor CO2 levels, fostering a healthier breathing environment for all occupants.

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Section: Introductionmentioning

confidence: 99%

Loop-Terminated Mach-Zehnder Interferometer Integrated with Functional Polymer for CO<sub>2</sub> Gas Sensing

Butt

2024

Preprint

View full text Add to dashboard Cite

show abstract

“…The Mach-Zehnder interferometer (MZI) structure holds immense significance in sensing applications due to its ability to efficiently manipulate and detect light signals [10,11]. This structure utilizes the principle of interference to measure changes in optical properties, making it highly sensitive to external stimuli such as temperature, pressure, and refractive index variations [12][13][14][15]. Its compact size, low power consumption, and high sensitivity make it ideal for a wide range of sensing applications, including environmental monitoring, biomedical diagnostics, and industrial process control [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Loop-Terminated Mach–Zehnder Interferometer Integrated with Functional Polymer for CO2 Gas Sensing

Butt

2024

Applied Sciences

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In this work, a numerical study on the loop-terminated Mach–Zehnder interferometer (LT-MZI) structure for CO2 gas sensing applications is carried out via the finite element method. The sensing arm is covered with a polyhexamethylene biguanide (PHMB) polymer which is highly receptive to CO2 gas. The refractive index of the host material decreases due to the absorption of the CO2 gas resulting in a shift in the interference pattern of the LT-MZI structure. As a result, a redshift in the wavelength is observed in the transmission spectrum of the device. The sensitivity of the device is estimated at 7.63 pm/ppm, 34.46 pm/ppm, and 74.78 pm/ppm for the sensing arm lengths of 5 µm, 10 µm, and 15 µm, respectively. The sensitivity can be further enhanced, however, at the cost of the bigger footprint of the device. Utilizing the innovative sensor design, a comprehensive range of CO2 gas concentrations spanning from 0 to 524 ppm is effectively detected. This compact and highly sensitive device serves as a vital tool for monitoring indoor CO2 levels, fostering a healthier breathing environment for all occupants.

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“…Since 2020, a few researchers have started introducing CSF with unique modifications such as Vshaped, S-shaped, wave-shaped, short-tapered shaped, and half-coated PDMS on D-shaped fiber, thus offering a state of art on CSF design [4][5][6][7][8]. These new designs are robust and have successfully overcome the fragility of the conventional CSF design such as adiabatic tapered-shaped and wet 88 chemical etched-shaped fiber [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Simulation of Trenched Coreless Silica Fiber Sensor for Refractive Index Measurement

Nazirah Mohd Razali,

Hafizal Yahaya,

Muhammad Quisar Lokman

et al. 2023

ARASET

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Coreless silica fiber has garnered a lot of attention in the field of sensors. Nevertheless, the limitation of conventional and unique coreless silica fiber sensors such as complex simulation, and high fragility of its physical structure needs to be considered. This work presents a simulation of a new coreless silica fiber design in a form of a trenched coreless silica fiber sensor to overcome these limitations. To optimize the sensor’s design, the trench depth was changed in the range of 0 μm to 50 µm at a fixed trench width of 50 μm. The change in analyte refractive index ranging from 1.3000 RIU to 1.4000 RIU was performed to evaluate the simulated sensing performance which showed that the increase in trench depth improved the sensor’s sensitivity with 50 μm being the trench depth at which the highest sensitivity was recorded. Later, the results obtained was compared to the closest in term of design which is the standard coreless fiber. Overall, the trenched coreless silica fiber design provided better sensitivity and is highly capable as of has a new refractive index sensor with an estimated sensitivity of up to 6.62726x10-7, higher than the simulated standard coreless fiber sensor with that of 2.22053x10-7.

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Refractive index Mach–Zehnder interferometer sensor based on tapered no-core fiber

Cited by 10 publications

References 16 publications

Loop-Terminated Mach-Zehnder Interferometer Integrated with Functional Polymer for CO<sub>2</sub> Gas Sensing

Loop-Terminated Mach-Zehnder Interferometer Integrated with Functional Polymer for CO<sub>2</sub> Gas Sensing

Loop-Terminated Mach–Zehnder Interferometer Integrated with Functional Polymer for CO2 Gas Sensing

Simulation of Trenched Coreless Silica Fiber Sensor for Refractive Index Measurement

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