Design of Magnetic Fluid Sensor Using Elliptically Hole Assisted Photonic Crystal Fiber (PCF)

Mitu, Sumaiya Akhtar; Ahmed, Kawsar; Hossain, Md. Nadim; Paul, Bikash Kumar; Nguyen, Truong Khang; Dhasarathan, Vigneswaran

doi:10.1007/s10948-020-05476-4

Cited by 22 publications

(9 citation statements)

References 23 publications

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“…where n s and n 0 are the saturation and initial refractive indices of the MF (n s ¼ 1.4244, n 0 ¼ 1.4475), respectively, α is the fitting parameter (α ¼ 5), H is the external magnetic field, H c;n is the critical magnetic field (H c;n ¼ 30 Oe), and T is the external ambient temperature (T ¼ 280 K). 23 The sensitivity of the sensor is calculated based on a small change in the refractive index of the magnetic fluid. The detection of magnetic field and temperature is shown as a drift of the resonance peak of the reflection spectrum.…”

Section: Structure and Calculation Methodsmentioning

confidence: 99%

Effect of lithium niobate on the sensing characteristics of magnetic and thermal sensor with one-dimensional photonic crystal

et al. 2023

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.A highly sensitive one-dimensional photonic crystal magnetic and thermal sensor with lithium niobite (LiNbO3) used as the defect layer is proposed. The rigorous coupled wave analysis theory and the wavelength interrogation method were performed to further investigate the effects of different defect layers and magnetic fluid film structure parameters on the sensitivity and figure of merit (FOM). The results show that the introduction of LiNbO3 can significantly improve the sensing performance. When LiNbO3 was introduced as the defect layer, the magnetic field detection sensitivity increased from 0.817 to 1.9133 nm / Oe, whereas the temperature detection sensitivity increased from −0.0724 to 0.304 nm / ° C. Meanwhile, it provides a high FOM value of 8.7099 Oe − 1. Our work provides a guideline for the future application of LiNbO3 materials in magnetic and thermal sensors.

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Section: Structure and Calculation Methodsmentioning

confidence: 99%

Effect of lithium niobate on the sensing characteristics of magnetic and thermal sensor with one-dimensional photonic crystal

et al. 2023

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“…In the absence of an external magnetic field, the coupling length, , can be obtained by using the propagation constants of fundamental and cladding modes and as 31 . The low difference between refractive indices is responsible for the high coupling length and also responsible for high sensitivity 32 .…”

Section: Methodsmentioning

confidence: 99%

Designing magnetic field sensor based on tapered photonic crystal fibre assisted by a ferrofluid

Taghizadeh

Bozorgzadeh

Ghorbani

2021

Sci Rep

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A novel magnetic field sensor is proposed based on the combination of in-line tapered photonic crystal fibre (PCF) Mach–Zehnder interferometer and magnetic nanoparticles. The sensor is theoretically investigated and experimentally realized. The effect of the mechanical strain and the magnetic field on the sensitivity of the sensor is studied. It is found that the proposed sensor shows a wavelength-sensitivity of $$-\,0.072\,\text {nm/mT}$$ - 0.072 nm/mT and a strain-sensitivity of $$1\,\text {pm/}\upmu \,\epsilon \,$$ 1 pm/ μ ϵ . To evaluate the effect of the magnetic nanoparticles on the output light intensity, the sensitivity response of the device has been measured under different magnetic field strengths for different length scales. The experimental results show refractive index changes of the magnetic nanoparticles-infiltrated PCF—acting as fibre cladding—under the applied magnetic field leads to variations of the interferometric output. The sensitivity of magnetic field measurement with the sensor with $$30\,\text {mm}$$ 30 mm and $$40\,\text {mm}$$ 40 mm PCF could reach up to $$0.021\,\text {dB/mT}$$ 0.021 dB/mT and $$0.017\,\text {dB/mT}$$ 0.017 dB/mT , respectively. The results show a very good linear response that is an essential requirement for the practical sensors. The proposed magnetic field sensor finds applications in various areas, such as optical sensing, military, power industry, and tunable photonic devices.

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“…It is generally acknowledged that the SPR-based PCFs work owing to the interactions between electrons on the surface of the plasmonic material along with the evanescent field [ 31 , 32 ]. The confinement loss (

) is a good metric representing the loss in propagation, which can be calculated using Equation ( 2 ) [ 33 , 34 ], where

denotes the effective RI of the core mode. The unit of

value is dB/cm.…”

Section: Design and Analysis Of The Structurementioning

confidence: 99%

A D-Shaped SPR-Based PCF Sensor with an Extremely High-Amplitude Sensitivity for Measuring the Refractive Index

Chen

et al. 2023

Micromachines

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In this work, a new D-shaped photonic crystal fibre sensor structure based on surface plasmon resonance (SPR) is purposed for measurement of analyte refractive index (RI). In this design, a silica cylinder is polished into a D-shaped silica material structure with a flattened surface where two Au nanowires are coated. Some air holes are omitted to form the core mode region. With the implementation of gold nanowires and a core region for the exciting SPR effect with variate physical values, analyte RI can be measured with a wavelength coverage from 850 to 1350nm. The numerical simulation shows the maximum wavelength sensitivity of the purposed design achieves 19,600nm/RIU with an RI coverage from 1.37 to 1.42. Moreover, the sensor has a tremendous amplitude sensitivity and the maximum absolute value is about 2300RIU−1. Benefiting from these outstanding performance, the purposed structure can be given priority when it is applied in biomedical detecting and environmental assessment science.

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Design of Magnetic Fluid Sensor Using Elliptically Hole Assisted Photonic Crystal Fiber (PCF)

Cited by 22 publications

References 23 publications

Effect of lithium niobate on the sensing characteristics of magnetic and thermal sensor with one-dimensional photonic crystal

Effect of lithium niobate on the sensing characteristics of magnetic and thermal sensor with one-dimensional photonic crystal

Designing magnetic field sensor based on tapered photonic crystal fibre assisted by a ferrofluid

A D-Shaped SPR-Based PCF Sensor with an Extremely High-Amplitude Sensitivity for Measuring the Refractive Index

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