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Design and analysis of slow light regime in silicon carbide 2D photonic crystal waveguides
Institution:1. Faculty of Electrical and Computer Engineering, Advanced Devices Simulation Lab, Tarbiat Modares University, PO Box 14115-194, Tehran 1411713116, Iran;2. Faculty of Engineering, Shahrekord University, Shahrekord 8818634141, Iran;1. Department of Applied Physics, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands;2. National Science Center “Kharkiv Institute of Physics and Technology”, Akademichna St. 1, 61108 Kharkiv, Ukraine;1. Department of Electronic Engineering, Shang Hai Jian Qiao University, Shanghai 201306, P.R. China;2. Key Laboratory of Polar Materials and Devices, East China Normal University, Shanghai 200241, P.R. China;3. School of Electronics and Information, Nantong University, Nantong 226019, P.R. China;1. State Key Lab for Turbulence and Complex Systems, College of Engineering, Peking University, Beijing 100871, China;2. Department of Mechanics, Beijing Jiaotong University, Beijing 100044, China;1. Department of Electronic Engineering, Shang Hai Jian Qiao University, Shanghai 201306, PR China;2. Key Laboratory of Polar Materials and Devices, East China Normal University, Shanghai 200241, PR China;3. School of Electronics and Information, Nantong University, Nantong 226019, PR China
Abstract:We theoretically demonstrate the slow light capabilities of 2D silicon carbide based photonic crystal W1 waveguides (SiC-PhC-W1Ws) with numerical simulations. The PhC is assumed to be created by devising air-holes with hexagonal lattice in a standard SiC substrate having oscillator type ordinary refractive index. Numerical simulations show that by means of selective optofluidic infiltration and varying the air-holes radii, SiC-PhC-W1Ws are capable of slowing light down by about 473 times while their group velocity dispersions are tailored to near zero values. Our numerical study also suggests the possibility of slow-light guiding with ng × Δλ/λc values as high as 0.42 in SiC-PhC-W1Ws at optical telecommunications wavelengths.
Keywords:Dispersive material  Dispersion engineering  Photonic crystal waveguides  Silicon carbide  Slow light regime
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