Numerical analysis of a metal-insulator-metal waveguide-integrated magnetic field sensor operating at sub-wavelength scales

Haque, Mohammad Ashraful; Rahad, Rummanur; Faruque, Md. Omar; Mobassir, Md Sadi; Sagor, Rakibul Hasan

doi:10.1016/j.sbsr.2023.100618

Cited by 26 publications

(2 citation statements)

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“…With the increase in temperature, the loss peak obviously shifted blue. According to equation (7), when the environment RI is 1.42, the temperature range is −10 °C∼100 °C, and when T is increased from −10 °C to 0 °C, the maximum sensitivity of temperature measurement can be obtained is 15.4 nm/°C. Figure 12(b) shows the fitting relationship between resonance wavelength and liquid temperature.…”

Section: Ri Sensitivitymentioning

confidence: 99%

“…When two types of waves meet the phase matching condition (that is, the propagation coefficients of the two waves are equal), a clear resonance peak appears in the spectrum [2,3]. Changing the refractive index (RI) of the medium in contact with the metal will cause the change in the resonant coupling condition, and then affect the resonance peak movement [4,5], so the change of the RI of the external environment can be measured by the resonance peak movement [6,7]. When the temperature is measured, the temperature sensitive material changes with the RI, and the ambient temperature changes the RI of the temperature sensitive material and the resonance peak shifts.…”

Section: Introductionmentioning

confidence: 99%

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SPR based dual parameter wide range curling pot shaped photonic crystal fiber sensor

Guo,

Du,

et al. 2024

Phys. Scr.

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This article proposes a curling pot shaped photonic crystal fiber (PCF) sensor based on surface plasmon resonance (SPR), which utilizes two parallel polished surfaces in the cladding to achieve dual parameter measurements of liquid refractive index (RI) and temperature. The mode characteristics and sensing performance of the designed PCF sensor are studied using the finite element method, and the effects of changes in structural parameters such as pore radius, spacing, and gold film thickness on the resonance spectrum are analyzed. The sensing accuracy of the sensor is insensitive to the change of structural parameters, and it has the characteristics of a wide detection range, high sensitivity, and easy manufacture. When the liquid RI is in a wide range of 1.33-1.42, the RI sensitivity up to 20400 nm/RIU is obtained. When the temperature is within a wide range of -10 °C -100 °C, a temperature sensitivity of up to 15.4 nm/°C is achieved. The tight structure design of the sensor core close to the polishing surface and the anti-spill light design with a uniform arrangement of air holes enhance the SPR effect, which is the essential reason for achieving a wide detection range and high sensitivity.

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Section: Ri Sensitivitymentioning

confidence: 99%