Graded index porous optical fibers – dispersion management in terahertz range.
TLDR
Graded index porous fiber incorporating an air-holes array featuring variable air-hole diameters and inter-hole separations is proposed and experimentally demonstrates smaller pulse distortion, larger bandwidth and higher excitation efficiency compared to fibers with uniform porosity.Abstract:
A graded index porous optical fiber incorporating an air-hole array featuring variable air-hole diameters and inter-hole separations is proposed, fabricated, and characterized in a view of the fiber potential applications in low-loss, low-dispersion terahertz guidance. The proposed fiber features simultaneously low modal and intermodal dispersions, as well as low loss in the terahertz spectral range. We experimentally demonstrate that graded index porous fibers exhibit smaller pulse distortion, larger bandwidth, and higher excitation efficiency when compared to fibers with uniform porosity.read more
Citations
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Toward real-time terahertz imaging
TL;DR: This critical and comprehensive review of enabling hardware, instrumentation, algorithms, and potential applications in real-time high-resolution THz imaging can serve a diverse community of fundamental and applied scientists.
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The progress and perspectives of terahertz technology for diagnosis of neoplasms: a review
Kirill I. Zaytsev,Kirill I. Zaytsev,Kirill I. Zaytsev,Irina N. Dolganova,Irina N. Dolganova,Irina N. Dolganova,Nikita V. Chernomyrdin,Nikita V. Chernomyrdin,Nikita V. Chernomyrdin,Gleb M. Katyba,Gleb M. Katyba,A. A. Gavdush,A. A. Gavdush,Olga P. Cherkasova,Olga P. Cherkasova,G. A. Komandin,Marina A. Shchedrina,A. N. Khodan,Dmitry Ponomarev,Igor V. Reshetov,Valery E. Karasik,Maksim Skorobogatiy,Vladimir N. Kurlov,Vladimir N. Kurlov,Valery V. Tuchin,Valery V. Tuchin,Valery V. Tuchin +26 more
TL;DR: This review considers the modern research results in THz diagnosis of malignant and benign neoplasms, along with the topical research and engineering problems, which restrain the THz technology translation to clinics, and discusses existing modalities of THz spectroscopic and imaging systems.
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3D printed hollow-core terahertz optical waveguides with hyperuniform disordered dielectric reflectors
TL;DR: In this article, a hollow core THz waveguide with hyperuniform disordered reflectors is proposed, fabricated, and characterized, and the results confirm that proposed waveguide exhibit sizable photonic band gaps (20%) even when relatively low refractive index contrast used (resin/air).
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Sapphire shaped crystals for waveguiding, sensing and exposure applications
Gleb M. Katyba,Gleb M. Katyba,Kirill I. Zaytsev,Kirill I. Zaytsev,Kirill I. Zaytsev,Irina N. Dolganova,Irina N. Dolganova,Irina N. Dolganova,Irina A. Shikunova,Nikita V. Chernomyrdin,Nikita V. Chernomyrdin,Nikita V. Chernomyrdin,Stanislav O. Yurchenko,Gennady A. Komandin,Igor V. Reshetov,V.V. Nesvizhevsky,Vladimir N. Kurlov,Vladimir N. Kurlov +17 more
TL;DR: The second half of the XX century was marked by a rapid development of sapphire shaped crystal growth technologies, driven by the demands for fast, low-cost, and technologically reliable methods of producing sappire crystals of complex shape as mentioned in this paper.
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Ultra low-loss hybrid core porous fiber for broadband applications.
TL;DR: The design and analysis of a novel hybrid porous core octagonal lattice photonic crystal fiber for terahertz wave guidance and it exhibits comparatively higher core power fraction, lower confinement loss, higher effective mode area, and an ultra-flattened dispersion profile with single mode propagation.
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.
Journal ArticleDOI
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.
Journal ArticleDOI
Terahertz pulse propagation in plastic photonic crystal fibers
TL;DR: Guided-wave singlemode propagation of sub-ps terahertz (THz) pulses in a plastic photonic crystal fiber has been experimentally demonstrated for the first time to the best of our knowledge as discussed by the authors.
Journal ArticleDOI
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.
Journal ArticleDOI
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.