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The finite-difference time-domain (FDTD) method [1] is used to analyze wave propagating in dielectric-slab optical waveguides. Unlike other methods which assume small reflections and can only study weakly guided or canonical structures. The time explicit FDTD method makes few assumption and can be used to analyze structures with arbitrary geometry and large refractive index mismatches. Excellent agreement...
A novel Backward Wave Oscillator (BWO) suitable for work at millimeter Wave/THz regime, based on the Axial loaded Double Defected-Photonic Crystal (ADD-PC) Slow Wave Structure (SWS), is proposed. With the advantage of the excellent mode selectivity of the PC and the power handling capability of the metallic SWS, the ADD-PC is an ideal structure for Cherenkov radiation-based source/amplifier. The performance...
Design of wireless communication systems inside buildings requires accurate site-specific characterization of indoor radio channel. In the complicated indoor communication environment, transmitting and receiving antennas are often inevitably installed close to wall corners, edges and other complex lossy scatters, where exact solution to scattering field distribution is not available. Channel models...
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