Journal ArticleDOI
Extremely low material loss and dispersion flattened TOPAS based circular porous fiber for long distance terahertz wave transmission
Md. Saiful Islam,Jakeya Sultana,Sohel Rana,Mohammad Rakibul Islam,Mohammad Faisal,Shubi Kaijage,Derek Abbott +6 more
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TLDR
In this paper, a porous core circular photonic crystal fiber (PC-CPCF) with ultra-low material loss for efficient terahertz wave transmission is presented.About:
This article is published in Optical Fiber Technology.The article was published on 2017-03-01. It has received 93 citations till now. The article focuses on the topics: Graded-index fiber & Dispersion-shifted fiber.read more
Citations
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Journal ArticleDOI
A Novel Approach for Spectroscopic Chemical Identification Using Photonic Crystal Fiber in the Terahertz Regime
Md. Saiful Islam,Jakeya Sultana,Kawsar Ahmed,Mohammad Rakibul Islam,Alex Dinovitser,Brian W.-H. Ng,Derek Abbott +6 more
TL;DR: In this paper, a novel porous core-photonic crystal fiber (PC-PCF) was designed and analyzed for detection of chemical analytes in the terahertz frequency range.
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Terahertz detection of alcohol using a photonic crystal fiber sensor.
TL;DR: 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.
Journal ArticleDOI
Terahertz Sensing in a Hollow Core Photonic Crystal Fiber
TL;DR: In this paper, a terahertz sensor based on a hollow core photonic crystal fiber has been proposed for chemical analyte detection in the tera-hertz frequency range, which is filled with an analyte and surrounded by a number of asymmetrical rectangular air holes bounded by a perfectly matched layer with absorbing boundary conditions.
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.
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Highly birefringent elliptical core photonic crystal fiber for terahertz application
Jakeya Sultana,Md. Saiful Islam,Mohammad Faisal,Mohammad Rakibul Islam,Brian W.-H. Ng,Heike Ebendorff-Heidepriem,Derek Abbott +6 more
TL;DR: In this paper, the authors proposed a novel strategy for designing a highly birefringent photonic crystal fiber (PCF) with near zero flattened dispersion properties by applying elliptical air holes in the core area.
References
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Journal ArticleDOI
Bendable, low-loss Topas fibers for the terahertz frequency range
Kristian Nielsen,Henrik Koblitz Rasmussen,Aurèle J. L. Adam,Paul C. M. Planken,Ole Bang,Peter Uhd Jepsen +5 more
TL;DR: Near-field, frequency-resolved characterization with high spatial resolution of the amplitude and phase of the modal structure proves that the fiber is single-moded over a wide frequency range, and the authors see the onset of higher-order modes at high frequencies as well as indication of microporous guiding at low frequencies and high porosity of the fiber.
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Porous polymer fibers for low-loss Terahertz guiding.
TL;DR: Two designs of effectively single mode porous polymer fibers for low-loss guiding of terahertz radiation are proposed and suggested porous fibers outperform considerably the rod-in-the-air fiber designs.
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Terahertz dielectric waveguides
TL;DR: Several classes of nonplanar metallic and dielectric waveguides have been proposed in the literature for guidance of terahertz (THz) or T-ray radiation.
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Low-loss subwavelength plastic fiber for terahertz waveguiding.
TL;DR: A simple subwavelength-diameter plastic wire, similar to an optical fiber, for guiding a terahertz wave with a low attenuation constant is reported, with direct free-space coupling efficiency as high as 20% can be achieved by use of an off-axis parabolic mirror.
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Humidity insensitive TOPAS polymer fiber Bragg grating sensor
Wu Yuan,Lutful Khan,David J. Webb,Kyriacos Kalli,Henrik Koblitz Rasmussen,Alessio Stefani,Ole Bang +6 more
TL;DR: Characterization of the FBGs shows that the TOPAS FBG is more than 50 times less sensitive to humidity than the conventional PMMA FBG in both wavelength regimes, which makes the TOPas FBG very appealing for sensing applications as it appears to solve the humidity sensitivity problem suffered by the PMMAFBG.