Experimental Study on Glass and Polymers: Determining the Optimal Material for Potential Use in Terahertz Technology

Islam, Md. Saiful; Cordeiro, Cristiano M. B.; Nine, J.; Sultana, Jakeya; Cruz, Alice L. S.; Dinovitser, Alex; Ng, Brian W.-H.; Ebendorff‐Heidepriem, Heike; Lošić, Dušan; Abbott, Derek

doi:10.1109/access.2020.2996278

Cited by 76 publications

(32 citation statements)

References 40 publications

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“…Zeonex is used as a background material due to its various useful properties in comparison to other materials. It has a constant refractive index of 1.529 over a wide range of frequencies [ 50 ]. Another benefit of Zeonex is its low bulk material absorption loss of 0.2 cm −1 .…”

Section: Design Methodologymentioning

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 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: Design Methodologymentioning

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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“…TOPAS was selected as the background material of the proposed PCF. According to the data provided in the experiment, the refractive indices and absorption coefficients of TOPAS are 1.531 and 0.2cm -1 respectively in the range of 0.5-5 THz [23].…”

Section: Geometry Of the Proposed Structurementioning

confidence: 97%

Highly Birefringent, Low Flattened Dispersion Photonic Crystal Fiber in the Terahertz Region

et al. 2021

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High-performance photonic crystal fiber (PCF) has an important impact on the development of the full potential of complex terahertz systems. A new kind of PCF with D-shaped air holes in core region was proposed for terahertz (THz) region. The numerical simulation results showed that the proposed PCF has a flat dispersion of 0.09 ± 0.28 ps/THz/cm at 0.8-1.2 THz. At 1 THz, an ultra-high birefringence of 0.0595, a low effective material loss (EML) of 0.0557 cm-1 , and dispersion that can be considered zero were obtained. In addition, other characteristics of the proposed PCF were strictly analyzed, such as confinement loss, bending loss, and effective mode area. The PCF is expected to be used for short distance propagation of terahertz, polarization maintaining and sensing applications of terahertz waves.

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“…The most common COCs for optical fibers are Zeonex and Topas. Their main advantages are the smaller water absorption, less brittle nature, easier moldability, smaller birefringence, higher chemical and thermal stability 30 , and higher transmittance in specific frequency ranges, like the THz [30][31][32] . Zeonex is also thermally compatible with PMMA making it possible to draw fibers formed of both materials 33 .…”

Section: Polymeric Materials: Zeonex and Functionalized Absmentioning

confidence: 99%

Ultra-simplified Single-Step Fabrication of Microstructured Optical Fiber

Cordeiro

Ebendorff‐Heidepriem

2020

Sci Rep

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Manufacturing optical fibers with a microstructured cross-section relies on the production of a fiber preform in a multiple-stage procedure, and drawing of the preform to fiber. These processes encompass the use of several dedicated and sophisticated equipment, including a fiber drawing tower. Here we demonstrate the use of a commercial table-top low-cost filament extruder to produce optical fibers with complex microstructure in a single step-from the pellets of the optical material directly to the final fiber. The process does not include the use of an optical fiber drawing tower and is time, electrical power, and floor space efficient. Different fiber geometries (hexagonal-lattice solid core, suspended core and hollow core) were successfully fabricated and their geometries evaluated. Air guidance in a wavelength range where the fiber material is opaque was shown in the hollow core fiber.

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Experimental Study on Glass and Polymers: Determining the Optimal Material for Potential Use in Terahertz Technology

Cited by 76 publications

References 40 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

Highly Birefringent, Low Flattened Dispersion Photonic Crystal Fiber in the Terahertz Region

Ultra-simplified Single-Step Fabrication of Microstructured Optical Fiber

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