Development of a photonic crystal fiber for THz wave guidance and environmental pollutants detection

Mou, Farhana Akter; Rahman, Md. Moshiur; Islam, Mohammad Rakibul; Bhuiyan, Mohammed Imamul Hassan

doi:10.1016/j.sbsr.2020.100346

Cited by 45 publications

(28 citation statements)

References 53 publications

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“…At higher core porosities, EML losses are lower since a higher porosity indicates that the volume of the air holes in the core is larger in contrast to that of the background material. As a result, a lesser amount of light is associated with the background material resulting in lower material losses [ 23 ]. More light resides within the core region and is trapped by the solid material at a higher frequency.…”

Section: Resultsmentioning

confidence: 99%

“…In the recent decade, there have been extensive designing and use of PCF sensors in THz territory in the fields of medical imaging [ 8 ], telecommunication [ 5 , 9 – 11 ], spectroscopy [ 12 – 14 ], bio-sensing [ 15 – 20 ], healthcare [ 21 , 22 ], environmental applications [ 23 ], pharmaceutical drug testing [ 24 , 25 ], and sensing applications [ 26 – 28 ] owing to its high flexibility in structural fabrications achieved by variations in the designing of core and cladding features. Recently, PCF-based biosensors have been employed for detecting a variety of bio-targets, proteins, nucleic acids, chemical and biological components [ 6 , 29 – 31 ] with high efficiency and selectivity.…”

Section: Introductionmentioning

confidence: 99%

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Wheel structured Zeonex-based photonic crystal fiber sensor in THz regime for sensing milk

Islam

Siraz

et al. 2021

Appl. Phys. A

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In this paper, a wheel structured Zeonex-based hexagonal packing photonic crystal fiber (PCF) sensor has been proposed for sensing camel milk with a refractive index of 1.3423 and cow milk with a refractive index of 1.3459. This sensor has been investigated for porosities of 85%, 90%, and 98% within a terahertz (THz) region ranging from 0.2 to 2.0 THz. At an operating frequency of 2 THz, this sensor has shown a maximum sensitivity of 81.16% and 81.32% for camel and cow milk, respectively. EML of 0.033013 cm −1 and 0.03284 cm −1 has been found for camel and cow milk, respectively, at the same operating conditions with negligible confinement losses of 8.675 10 –18 cm −1 1.435 10 –18 cm −1 . Several other parameters, such as the effective area, flattened dispersion, and numerical aperture, have also been obtained during the investigation. Since considerable attention has not been given yet in detecting various types of dairy products using PCF terahertz sensors, this design will pave a whole new path in further implementing THz sensing in the dairy industry.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Wheel structured Zeonex-based photonic crystal fiber sensor in THz regime for sensing milk

Islam

Siraz

et al. 2021

Appl. Phys. A

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“…In this article, the newly designed Zeonex based octagonal shape of the cladding region with two elliptical shapes in the core area has been introduced in the THz regime. The proposed model shows an extremely low effective material loss (EML) of 0.0162 cm −1 with 80% core power fraction and larger effective area (EA) of 5.88×10 -8 m 2 at 1 THz optical frequency than the previously published articles [35][36][37][38][39][40][41][42].…”

Section: Introductionmentioning

confidence: 81%

“…TOPAS is the background material of O-PCF fiber and supports to reduce the effective material loss (EML) with the wide band frequency range. So, effective material loss (EML) is determined by [36][37][38]:…”

Section: Analysis Of Optical Propertiesmentioning

confidence: 99%

Design and analysis of the effect of Zeonex based octagonal photonic crystal fiber for different types of communication applications

et al. 2021

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In this present work, a novel structure of octagonal cladding with two elliptical air holes based on photonic crystal fiber (O-PCF) has been presented for the application of different types of communication areas within the terahertz (THz) wave propagation. There are five layers of octagonal design shape of circular air holes (CAH) in cladding region with elliptical design shape of two air holes in core area has been reported in this research work. This O-PCF fiber has been investigated by the perfectly matched layers (PML) with the finite element method (FEM). After the simulation process, our proposed O-PCF fiber shows a low effective material loss (EML) of 0.0162 cm −1 , the larger effective area of 5.88×10-8 m2, the core power fraction (PF) of 80%, the scattering loss of 1.22×10 -10 dB/km, and the confinement loss of 3.33×10 -14 dB/m at the controlling region of 1 terahertz (THz). Due to its excellent characteristics, this proposed O-PCF fiber gives proficient transmission of broadband terahertz waves of signals. Moreover, for different kinds of optical communication applications and biomedical signals, our suggested O-PCF fiber will be highly perfect in the terahertz (THz) regions.

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“…e terahertz (THz) band is gaining high popularity as an apposite operating region for diverse application fields like spectroscopy, sensing, astrophysics, hereditary, biomedical, and telecommunication [1][2][3][4][5][6][7][8]. is band offers a broad frequency band extending from 0.1 to 10 THz.…”

Section: Introductionmentioning

confidence: 99%

Design and Numerical Analysis of a Novel Rectangular PCF (R-PCF)-Based Biochemical Sensor (BCS) in the THz Regime

Bulbul

Kouzani

Mahmud

et al. 2021

International Journal of Optics

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A novel PCF-based sensor has been presented in this paper to sense different chemicals and biocomponents. The proposed biochemical sensor (BCS) comprises a simple arrangement of rectangular holes. The competence of this BCS in detecting analytes is evaluated employing the full-vector finite element method (FEM). Performance metrics prove the competence of this BCS in sensing various analytes that have a refractive index in the range of 1.33–1.48. The proposed BCS shows ultralower values for both the bulk absorption and confinement loss. This BCS attains a maximum of about 95.82% relative sensitivity at 2.5 THz. Also, the dispersion for this sensor is only 0.12 ± 0.011 ps/THz/cm at the same point of interest. These results prove that the proposed BCS will play a key role in sensing toxic chemicals, illegal drugs, biocomponents, etc. Besides, the simple rectangle-based PCF structure ensures the feasibility of fabrication by practicing the existing fabrication strategies.

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Development of a photonic crystal fiber for THz wave guidance and environmental pollutants detection

Cited by 45 publications

References 53 publications

Wheel structured Zeonex-based photonic crystal fiber sensor in THz regime for sensing milk

Wheel structured Zeonex-based photonic crystal fiber sensor in THz regime for sensing milk

Design and analysis of the effect of Zeonex based octagonal photonic crystal fiber for different types of communication applications

Design and Numerical Analysis of a Novel Rectangular PCF (R-PCF)-Based Biochemical Sensor (BCS) in the THz Regime

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