Journal ArticleDOI
Terahertz detection of alcohol using a photonic crystal fiber sensor.
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TLDR
A novel Zeonex-based photonic crystal fiber has been modeled and analyzed for ethanol detection in terahertz frequency range and with the outstanding waveguiding properties, the proposed sensor can potentially be used in ethanol detection, as well as polarization-preserving applications of terAhertz waves.Abstract:
Ethanol is widely used in chemical industrial processes as well as in the food and beverage industry. Therefore, methods of detecting alcohol must be accurate, precise, and reliable. In this content, a novel Zeonex-based photonic crystal fiber (PCF) has been modeled and analyzed for ethanol detection in terahertz frequency range. A finite-element-method-based simulation of the PCF sensor shows a high relative sensitivity of 68.87% with negligible confinement loss of 7.79×10−12 cm−1 at 1 THz frequency and x-polarization mode. Moreover, the core power fraction, birefringence, effective material loss, dispersion, and numerical aperture are also determined in the terahertz frequency range. Owing to the simple fiber structure, existing fabrication methods are feasible. With the outstanding waveguiding properties, the proposed sensor can potentially be used in ethanol detection, as well as polarization-preserving applications of terahertz waves.read more
Citations
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Journal ArticleDOI
Refractive Index-Based Blood Components Sensing in Terahertz Spectrum
Kawsar Ahmed,Fahad Ahmed,Subrata Roy,Bikash Kumar Paul,Mst. Nargis Aktar,Dhasarathan Vigneswaran,Md. Saiful Islam +6 more
TL;DR: In this article, a novel partial type-b crystalline core with more compact cladding in hexagonal packing photonic crystal fiber (CC-PCF)-based optical sensor has been proposed for sensing different blood components.
Journal ArticleDOI
Terahertz optical fibers [Invited].
Md. Saiful Islam,Cristiano M. B. Cordeiro,Marcos A. R. Franco,Jakeya Sultana,Alice L. S. Cruz,Derek Abbott +5 more
TL;DR: This manuscript examines various optical fiber types including tube fibers, solid core fiber, hollow-core photonic bandgap, anti-resonant fibers, porous-core fibers, metamaterial-based fibers, and their guiding mechanisms for terahertz waveguides.
Journal ArticleDOI
Comparative Simulation of Thermal Noise Effects for Photodetectors on Performance of Long-Haul DWDM Optical Networks
Iraj Sadegh Amiri,Fatma Mohammed Aref Mahmoud Houssien,Ahmed Nabih Zaki Rashed,Abd El-Naser A. Mohammed +3 more
TL;DR: In this article, the effect of thermal noise level on the transmission quality with a variation of amplifying section length, number of Amplifying sections and channel speed is discussed for longhaul 16-channel dense-wavelength division multiplexing networks employing two different avalanche photodiode (APD) structures (Si and InGaAs) and positive-intrinsic-negative (PIN) photodetectors are simulated and compared under thermal noise effects for different fiber lengths.
Journal ArticleDOI
Design and numerical analysis of an extremely sensitive PCF-based sensor for detecting kerosene adulteration in petrol and diesel
TL;DR: In this paper, a photonic crystal fiber (PCF)-based fuel adulteration sensor has been modelled and numerically analyzed in order to resist a mixing of kerosene.
Journal ArticleDOI
Photonic crystal fiber based terahertz sensor for cholesterol detection in human blood and liquid foodstuffs
TL;DR: In this paper, an octagonal shaped hollow core with eight head star cladding structured photonic crystal fiber (PCF) has been proposed for cholesterol sensing in liquid analytes (human blood, cocking oil, liquid foods, etc.).
References
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Journal ArticleDOI
Photonic Crystal Chemical Sensors: pH and Ionic Strength
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Journal ArticleDOI
Teflon Photonic Crystal Fiber as Terahertz Waveguide
TL;DR: In this paper, the authors demonstrate the construction of reasonably long and non-polarization changing photonic fiber waveguide using Teflon which is a readily available and highly flexible material.
Journal ArticleDOI
THz porous fibers: design, fabrication and experimental characterization
Shaghik Atakaramians,V Shahraam Afshar,Heike Ebendorff-Heidepriem,Michael Nagel,Bernd M. Fischer,Derek Abbott,Tanya M. Monro +6 more
TL;DR: The effective refractive index measured by terahertz time domain spectroscopy shows a good agreement between the theoretical and experimental results indicating a lower dispersion for THz porous fiber compared to THz microwires.
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