Search Results: 1 - 10 of 100 matches for " "
All listed articles are free for downloading (OA Articles)
Page 1 /100
Display every page Item
Far-field super-resolution imaging with a planar hyperbolic metamaterial lens beyond the Fabry-Perot resonance condition  [PDF]
Cheng Lv,Wei Li,Xunya Jiang,Juncheng Cao
Physics , 2014,
Abstract: We demonstrate achieving the far-field super-resolution imaging can be realized by using a planar hyperbolic metamaterial lens (PHML), beyond the Fabry-Perot resonance condition. Although the thickness of the PHML is much larger than wavelength, the PHML not only can transmit radiative waves and evanescent waves with high transmission, but also can collect all the waves in the image region with the amplitudes of them being the same order of magnitude. We present a design for a PHML to realize the far-field super-resolution imaging, with the distance between the sources and the images 10 times larger than wavelength. We show the superresolution of our PHML is robust against losses, and the PHML can be fabricated by periodic stacking of metal and dielectric layers.
Experimental study of EIT-Like phenomenon in a metamaterial plasma waveguide  [cached]
Wusong Wang,Liwei Zhang,Kai Fang,Y. W. Zhang
Advanced Electromagnetics , 2012, DOI: 10.7716/aem.v1i3.93
Abstract: This paper demonstrates the realization of the electromagnetically induced transparency (EIT)-like transmission in a metamaterial plasma waveguide with double side defects based on transmission lines. The waveguide with a single side defect works as a plasma resonator and the resonance wavelength is determined by the Fabry-Perot resonance of surface plasma. While in a waveguide with double side defects, a transmission peak appears between the two resonators frequencies because of the destructive interference between the resonance modes of the two resonators, which indicates a pronounced EIT phenomenon. The experiment results agree well with simulations in microwave frequencies.
Dynamical behaviour of birefringent Fabry-Perot cavities  [PDF]
Paul Berceau,Mathilde Fouché,Remy Battesti,Franck Bielsa,Julien Mauchain,Carlo Rizzo
Physics , 2010, DOI: 10.1007/s00340-010-4005-y
Abstract: In this paper we present a theoretical and experimental study of the dynamical behaviour of birefringent cavities. Our experimental data show that usual hypothesis which provides that a Fabry-Perot cavity is a first-order low pass filter cannot explain the behaviour of a birefringent cavity. We explain this phenomenon, and give the theoretical expression of the equivalent cavity filter which corresponds to a second-order low pass filter.
Negative Goos--Hanchen Effect in Thin-Film Fabry--Perot Filter
Negative Goos-Hanchen Effect in Thin-Film Fabry-Perot Filter

LI Ming-Yu,LIU Xu,MA Xin,LI Yi-Yu,GU Pei-Fu,

中国物理快报 , 2007,
Abstract: We investigate the Goos-Hgnchen effect of a Gaussian light beam reflected by the thin-film Fabry-Perot filter. It is shown that the Goos-Hanchen shift can be either negative or positive, The Gaussian-beam analysis and stationary phase method are introduced to calculate the lateral shift between the incident beam and the reflected beam at different wavelengths and to analyse the Goos-Hgnchen effect in the thin-film Fabry-Perot filter, The effect of the incident beam diameter is also discussed,
Fabry -Perot filters with Tunable Josephson Junction Defects  [PDF]
Vincenzo Pierro,Giovanni Filatrella
Physics , 2015, DOI: 10.1016/j.physc.2015.07.010
Abstract: We propose to take advantage of the properties of long Josephson junctions to realize a frequency variable Fabry-Perot Filter that operates in the range 100-500 GHz with a bandwidth below 1 GHz. In fact, we show that it is possible to exploit the tunability of the effective impedance of the Josephson component, that is controlled by a dc bias, to tune, up to $10\%$ of the central frequency, the resonance of the system. An analysis of the linearized system indicates the range of operation and the main characteristic parameters Numerical simulations of the full nonlinear Josephson element confirm the behavior expected from the linear approximation.
White Light Interferometry for the Measurement of Extrinsic Fabry-Perot Interferometer

Jiang Yi,

光子学报 , 2006,
Abstract: The white light interferometry for the measurement of low-finesse extrinsic Fabry-Perot interferometer(EFPI) is reported. A broadband light is injected into EFPI,and the reflected light is scanned by another high-finesse tunable Fabry-Perot filter,the periodic spectra of EFPI can be obtained.To measure the cavity length,the spectra are fast Fourier transformed,the absolute length of cavity can be calculated by using the periodic spectra. The measuring accuracy is limited by the length of cavity. The longer cavity has higher measuring accuracy. When the length of cavity are 200 μm,400 μm,and 600 μm respectively,the measured results are agree with the actual length of the cavity.
Study of tunable Fabry-Perot filter based on piezoelectric polymer film

Zhou Ke-Yu,Ye Hui,Zhen Hong-Yu,Yin Yi,Shen Wei-Dong,

物理学报 , 2010,
Abstract: Tunable Fabry-Perot filter (FPF) has high practical value in optic communications. Piezoelectric copolymer P(VDF-TrFE) can be used as spacer material in FPF to obtain large tunability in wide range because of its great electrostrictive effect. The filter has been fabricated with the structure of DBR/electrode/spacer/electrode/DBR. The copolymer is partly etched at where the light traverses. The transmittance spectra have been studied. The resonant wavelengths have been modulated by applied voltage. The opti...
Study on Insertion Loss of Fiber Fabry-Perot Filters  [PDF]
Sheng-Nan Su, Hai-Bing Qi, Yong-Lin Yu
Journal of Computer and Communications (JCC) , 2013, DOI: 10.4236/jcc.2013.17015

Fiber Fabry-Perot (FFP) filters have been widely used in optical fiber communications, and insertion loss (IL) is one of its important characteristics. Based on theoretically analysis, factors related to IL were discussed. In order to investigate the IL of different structures, simulations are carried out with finite-difference time-domain (FDTD) algorithm. Comparisons are made between the optimized structure and full-size-mirror FFP filter, and fiber-inserted FFP filter as well. Simulation results demonstrated that the finite- size-mirror structure can confine the mode size of the open resonator, hence reduce the IL of FFP filter.

Ultrahigh finesse Fabry-Perot superconducting resonator  [PDF]
Stefan Kuhr,Sébastien Gleyzes,Christine Guerlin,Julien Bernu,Ulrich Busk Hoff,Samuel Deléglise,Stefano Osnaghi,Michel Brune,Jean-Michel Raimond,Serge Haroche,E. Jacques,P. Bosland,B. Visentin
Physics , 2006, DOI: 10.1063/1.2724816
Abstract: We have built a microwave Fabry-Perot resonator made of diamond-machined copper mirrors coated with superconducting niobium. Its damping time (Tc = 130 ms at 51 GHz and 0.8 K) corresponds to a ?nesse of 4.6 x 109, the highest ever reached for a Fabry-Perot in any frequency range. This result opens novel perspectives for quantum information, decoherence and non-locality studies.
Dynamic Resonance of Light in Fabry-Perot Cavities  [PDF]
M. Rakhmanov,R. L. Savage, Jr.,D. H. Reitze,D. B. Tanner
Physics , 2001, DOI: 10.1016/S0375-9601(02)01469-X
Abstract: The dynamics of light in Fabry-Perot cavities with varying length and input laser frequency are analyzed and the exact condition for resonance is derived. This dynamic resonance depends on the light transit time in the cavity and the Doppler effect due to the mirror motions. The response of the cavity to length variations is very different from its response to laser frequency variations. If the frequency of these variations is equal to multiples of the cavity free spectral range, the response to length is maximized while the response to the laser frequency is zero. Implications of these results for the detection of gravitational waves using kilometer-scale Fabry-Perot cavities are discussed.
Page 1 /100
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.