Design and investigation of PCF-based blood components sensor in terahertz regime

Hossain, Md. Bellal; Podder, Etu

doi:10.1007/s00339-019-3164-x

Cited by 75 publications

(32 citation statements)

References 27 publications

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“…A large number of PCF-based terahertz sensors have been proposed in the recent past for the identification of different types of chemicals [32][33][34], bane chemicals [41], blood components [48][49][50], alcohols [36], and so on. The prime designing objective of any kind of PCF-based sensor is to propagate the maximum amount of light through the core so that maximum light-analyte interaction takes place.…”

Section: Photonic-crystal-fiber-based Terahertz Sensormentioning

confidence: 99%

“…The proposed sensor offered a very high relative sensitivity of 98% at optimum conditions for two main reasons. Firstly, the hollow-core permits maximum light to travel through the core, Cross-sectional view of (a) kagome structured slotted core chemical sensor [33], (b) hybrid structured hollowcore chemical sensor [37], (c) hybrid structured rectangular hollow-core chemical sensor [40], (d) hexagonal structured rectangular porous core alcohol sensor [36], (e) hybrid structured polygonal hollow-core cholesterol sensor [45] and (f) hybrid structured rectangular hollow-core blood component sensor [48] in the terahertz regime.…”

Section: Photonic-crystal-fiber-based Terahertz Sensormentioning

confidence: 99%

“…Few PCF-based sensors can identify different components of human blood [48][49][50]. In 2019, Ahmed et al proposed a hollow-core Zeonex-based blood component sensor in the terahertz spectrum [48], whose cross-sectional view is represented in Figure 1(f).…”

Section: Photonic-crystal-fiber-based Terahertz Sensormentioning

confidence: 99%

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Terahertz Sensing Based on Photonic Crystal Fibers

Habib¹,

Anower²,

Islam³

2022

Terahertz Technology

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Photonic-crystal-fiber (PCF) based sensors in the terahertz spectrum have been immensely studied and implemented due to their unique advantages and high sensitivity. At an early stage, conventional and hybrid structured porous core PCF-based sensors were proposed, but the sensitivity was not so high. With the advancement of PCF fabrication technology, hybrid structured hollow-core PCFs have been reported and offer superior sensing characteristics than the previous types. In this chapter, both porous core and hollow-core PCF-based THz sensors are analyzed and the propagation characteristics are explained using terahertz spectrum. Finally, some promising terahertz sensors are studied and compared at the end of this chapter.

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Section: Photonic-crystal-fiber-based Terahertz Sensormentioning

confidence: 99%

Section: Photonic-crystal-fiber-based Terahertz Sensormentioning

confidence: 99%

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Terahertz Sensing Based on Photonic Crystal Fibers

Habib¹,

Anower²,

Islam³

2022

Terahertz Technology

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“…However, the hollow-core PCF is the best option for sensing applications because it provides the maximum area of interaction between the analyte and the radiation. Then, any change in the refractive index (RI) induces variation in the propagating modes of the waveguide, which can be used to detect changes in the composition, chemical properties, and physical properties of liquid and gases [41,42].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, Islam et al employed a porous core PCF with rectangular air holes in the core and a kagome structured cladding for the detection of chemical analytes in the terahertz frequency range [43]. The results reveal that this configuration can reach a maximum relative sensitivity of 85.7% and low confinement losses at 1. propose and analyze a hollow-core PCF to detect blood components in 2019 [41]. The waveguide is designed using Zeonex material with rectangular slots in the core and cladding region.…”

Section: Introductionmentioning

confidence: 99%

Numerical Modeling of a Rectangular Hollow-Core Waveguide for the Detection of Fuel Adulteration in Terahertz Region

Habib

Reyes-Vera

Villegas-Aristizabal

et al. 2020

Fibers

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A petrol adulteration sensor based on a rectangular shaped hollow-core photonic crystal fiber is proposed and numerically analyzed in the terahertz regime. The performance of the proposed sensor was evaluated when it is employed to characterize different kerosene mixtures. In this research, the adulterated fuel sample is filled in the rectangular hollow channel and the electromagnetic signal of the terahertz band is also driven through the same channel. The received signal after the interaction of fuel with the terahertz signal will advise the refractive index of the fuel oil inside the core, which will also bear the information of how much extrinsic component is present in the fuel. The finite element method based simulation shows that the proposed sensor can reach a high relative sensitivity of 89% and presents low confinement losses at 2.8 THz. The reported sensing structure is easily realizable with the conventional manufacturing techniques. Consequently, this proposed fiber may be treated as an essential part of real-life applications of petrol adulteration measurements.

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Ultrahigh sensitivity terahertz refractive index sensor based on four‐inscribed hole defect photonic crystal structure

Wen,

Sun,

Liang

et al. 2023

Micro & Optical Tech Letters

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We proposed and investigated an ultrahigh sensitivity terahertz (THz) refractive index sensor based on four‐inscribed hole defect photonic crystal structure. Due to the formation of resonant modes, the sensing properties can be obtained by shifting the sharp resonance in the transmission spectrum as changing of the analyte refractive index. In addition, the influence of structure parameters on the sensing performance is explored and demonstrated numerically. The numerical results illustrate that the Q‐factor and figure of merit reach 323.71 and 167.188 can be obtained under the optimized structural parameters. In particular, an ultrahigh sensitivity of 198.8 μm/RIU can be realized in the frequency range of 0.777–0.779 THz. The proposed sensor may find significant applications in biochemical sensing systems.

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Design and investigation of PCF-based blood components sensor in terahertz regime

Cited by 75 publications

References 27 publications

Terahertz Sensing Based on Photonic Crystal Fibers

Terahertz Sensing Based on Photonic Crystal Fibers

Numerical Modeling of a Rectangular Hollow-Core Waveguide for the Detection of Fuel Adulteration in Terahertz Region

Ultrahigh sensitivity terahertz refractive index sensor based on four‐inscribed hole defect photonic crystal structure

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