Highly Sensitive Dual-Core PCF Based Plasmonic Refractive Index Sensor for Low Refractive Index Detection

Haque, Emranul; Mahmuda, Subaha; Hossain, Md. Anwar; Hai, Nguyen Hoang; Namihira, Y.; Ahmed, Feroz

doi:10.1109/jphot.2019.2931713

Cited by 85 publications

(24 citation statements)

References 27 publications

(33 reference statements)

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“…Significant blueshift was seen with low confinement loss when changing the thickness of Gold from 45 to 85 nm. When the effective RI of the fundamental mode and plasmonic mode changes, the phase-matching condition also changes [ 30 , 31 ]. Figure 6 b demonstrates redshifting with high confinement loss in the resonant wavelength when the thickness of gold remained constant at 65 nm, and the thickness of the TiO 2 layer was increased from 5 to 25 nm.…”

Section: Resultsmentioning

confidence: 99%

Sensitivity Enhancement of Modified D-Shaped Microchannel PCF-Based Surface Plasmon Resonance Sensor

Noman

Haque

Hossain

et al. 2020

Sensors

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In this work, a highly sensitive dual-core configured microchannel-based plasmonic refractive index (RI) sensor was investigated, which can be used for low RI detection. Both the sensing layer and the plasmonic material layer were built outside of the fiber design to detect the surrounding medium’s RI changes. Additionally, the effects of different plasmonic materials gold (Au), silver (Ag), and copper (Cu) toward sensitivity were investigated for the same structure. An adhesive agent was used in this work, titanium dioxide (TiO2), and was coated on top of the plasmonic material to prevent the oxidation of Ag and Cu. The coupling strength between the fundamental mode and the surface plasmon polariton (SPP) mode was observed to be very strong due to the TiO2 adhesive agent. With a resolution of 7.41 × 10−7 RIU, maximum wavelength sensitivity (WS) of 135,000 nm/RIU and amplitude sensitivity (AS) of 3239 RIU−1 were achieved using the proposed sensor while using Au as a plasmonic material for an analyte RI range of 1.29–1.39. A detailed study of relevant literature revealed that the achieved wavelength sensitivity for plasmonic material gold (Au) is the highest among reported photonic crystal fiber (PCF)-surface plasmon resonance (SPR) sensors to date.

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Section: Resultsmentioning

confidence: 99%

Sensitivity Enhancement of Modified D-Shaped Microchannel PCF-Based Surface Plasmon Resonance Sensor

Noman

Haque

Hossain

et al. 2020

Sensors

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“…The attractive feature of surface plasmon polarites (SPP), ie the restriction of light in nano-dimensions, has caused this phenomenon to be widely studied and this feature can be used to build many plasmonic structures such as filters [1], multiple optical instruments [2], absorbers [3], splitters [4] and sensors [5][6][7][8][9][10][11][12][13]. Also metal-insulated-metal plasmonic waveguide (MIM) due to its ability to limit light in a small area and its compatibility with electronic operating systems is widely used in the design of many plasmonic devices.…”

Section: Introductionmentioning

confidence: 99%

Employment of Resonators for Resolution Enhancement in Plasmonic Refractive Index Sensors

Abbasi¹

2022

Preprint

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In this paper, a plasmonic refractive index sensor based on metal insulated metal waveguide (MIM) with three rings and a resonant cavity is first proposed and numerically evaluated. Next, we add four teeth to the sensor structure. We study and simulate the resonant wavelengths and refractive index of resonators using the time difference finite difference method. Given that the sensor and the conduction characteristics of plasmonic waves are influenced by the structure parameters,Therefore, by changing the refractive index and changing the dimensions and coordinates of the cavity and rims, we can change the passage coefficient in the resonant modes and measure the sensor performance. As a result, we obtain the sensitivity coefficient, the figure of merit (FOM) and the quality factor Q of the sensor. We modulate the resonance wavelength FWHM using the generated modes and reach a sensitivity of 2166 nm / RIU. These plasmonic sensors with a simple framework and balanced performance and high optical resolution can be used to measure the refractive index in the medical, chemical and food industries.

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“…Heretofore, numbers of SPR-based sensors have been proposed and extensively studied, such as optical fiber SPR sensors [3], prisms SPR sensors [4] and photonic crystal fibers (PCF) SPR sensors [5]. In particular, the combination of SPR and PCF provides researchers with novel insights and methods for developing sensors with high sensitivity and wide range.…”

Section: Introductionmentioning

confidence: 99%

A Dual-Channel Surface Plasmon Resonance Sensor Based on Dual-Polarized Photonic Crystal Fiber for Ultra-Wide Range and High Sensitivity of Refractive Index Detection

et al. 2021

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A surface plasmon resonance sensor based on a dual-groove photonic crystal fiber (PCF) for refractive index (RI) sensing with ultra-wide measurement range and high sensitivity is designed and theoretically investigated. The upper and right grooves of the PCF as different sensing channels are coated with Au or Au-TiO 2 compound film. The influence of the parameters on the sensing performance of the designed sensor are analyzed. Numerical results show that the maximum wavelength sensitivity (WS) of 6800 nm/RIU with a wavelength resolution of 1.47× 10 −5 RIU and maximum amplitude sensitivity (AS) of 5440 RIU −1 for the x polarization in the ultra-wide measurement range from 1.25 to 1.43 have been achieved. For y polarization, the proposed sensor has a maximum WS of 13200nm/RIU and AS of 3465 RIU −1 in the detection range from 1.39 to 1.43. The corresponding wavelength resolution is obtained about 7.58× 10 −6 RIU. Moreover, the ultra-wide range and high sensitivity of the sensor can be flexibly adjusted by a polarization controller to meet different practical requirements. Therefore, the proposed sensor would be a suitable candidate for medical testing, bio-sensing and environmental monitoring.

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Highly Sensitive Dual-Core PCF Based Plasmonic Refractive Index Sensor for Low Refractive Index Detection

Cited by 85 publications

References 27 publications

Sensitivity Enhancement of Modified D-Shaped Microchannel PCF-Based Surface Plasmon Resonance Sensor

Sensitivity Enhancement of Modified D-Shaped Microchannel PCF-Based Surface Plasmon Resonance Sensor

Employment of Resonators for Resolution Enhancement in Plasmonic Refractive Index Sensors

A Dual-Channel Surface Plasmon Resonance Sensor Based on Dual-Polarized Photonic Crystal Fiber for Ultra-Wide Range and High Sensitivity of Refractive Index Detection

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