Results 81 to 90 of about 156,507 (335)
Modeling photonic crystal fibers
Advances in Applied Mathematics, 2006 AbstractWe study guidance of electromagnetic waves in photonic fibers. Both transverse magnetic and transverse electric polarizations are investigated. We characterize guided modes in the fiber as eigenfunctions of compact integral operators and prove their exponential decay in the cladding.
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Two-mode photonic crystal fibers
SPIE Proceedings, 2005 Index-guiding photonic crystal fibers with appropriate structural parameters support the fundamental and second order modes over a practically infinite wavelength range. The polarization principal axes and mode field patterns of the modes can be made stable by having different size air-holes along the orthogonal directions.
Jin, W, Wang, Z, Ju, J
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A Bio‐Inspired Perspective on Materials Sustainability
Advanced Materials, EarlyView.This perspective discusses natural materials as inspiration for sustainable engineering designs and the processing of materials. First, circularity, longevity, parsimony, and activity are presented as essential material paradigms. The perspective then uses many examples of natural and technical materials to introduce principles such as oligo ...
Wolfgang Wagermaier +2 more
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Advanced Materials, EarlyView.The rise of lead halide perovskite semiconductors has enabled high‐performance LEDs with internal quantum efficiencies approaching 100%. In order to further enhance the external quantum efficiencies limited by light outcoupling effects, in this account, the strategies for reducing energy dissipation through the substrate, waveguide, and evanescent ...
Tommaso Marcato +2 more
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PHOTONIC CRYSTAL AND PHOTONIC CRYSTAL FIBERS COMMUNICATIONS
EUREKA: Physics and Engineering, 2016 The development of all optical communications could benefit from the index guiding photonic crystal fibers. In communication the photonic crystal fibers could provide many new solutions. Conventional optical fibers have within the last decades revolutionized the communications industry and it is today a mature technology being pushed to its limit with ...
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Advanced Materials, EarlyView.This review explores how in situ and operando spectroscopic techniques reveal the real‐time behavior of reticular materials, including MOFs and COFs. These methods track material formation and functionalization, structural changes, defect formation, dynamic responses to external triggers, and catalytic processes.
Bettina Baumgartner +4 more
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Crystals, 2018 We propose a tunable magnetic fluid-filled hybrid photonic crystal fiber mode converter. Innovative design principles based on the hybrid connected dual-core photonic crystal fiber and magnetically modulated optical properties of magnetic fluid are ...
Yingying Yu, Bo Sun
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Light‐Emitting Diodes Based on Metal Halide Perovskite and Perovskite Related Nanocrystals
Advanced Materials, EarlyView.The review covers the past and current developments in light‐emitting diodes (LEDs) exploiting nanocrystals of halide perovskites and perovskite‐related materials. The review examines the aspects of material optimizations, device engineering, and applications.
Ying Liu +7 more
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Design of temperature sensor using twisted photonic crystal fiber
Results in Physics, 2018 We proposed a novel temperature sensor based on dual core photonic crystal fiber (DCPCF) and applying different twisting on its cladding surface. The temperature dependent chloroform is applied as analyte.
K. Vinoth Kumar +3 more
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Advanced Electromagnetics, 2018 In this paper, a high sensitivity temperature sensor based on photonic crystal fiber long period grating (PCF-LPG) filled with ethanol is proposed and simulated by full vector finite element method. The relationship between the resonant wavelength shift,
R. Boufenar, M. Bouamar, A. Hocini
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