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Characteristics of Slow Light in a Photonic Crystal Coupled-Cavity Waveguide

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Abstract:

A two-dimensional (2D) triangular lattice photonic crystal coupled-cavity waveguide is designed and optimized. The transmission spectrum of the PC waveguide with TE polarization is calculated by using the finite-difference time-domain (FDTD) method, and the group velocity of c/131.18 at the wavelength is obtained. Through optimizing the parameters of photonic crystal waveguide, different resonance length are obtained by changing the number of the continous air holes. The smallest group velocity is obtained to be c/2209 in the coupled-cavity waveguide with 15 air holes. The mechanism of slow light in the coupled-cavity waveguide of photonic crystal is analyzed.

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Periodical:

Advanced Materials Research (Volumes 887-888)

Pages:

437-441

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.887-888.437

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Online since:

February 2014

Authors:

Chang Xin Zhang*, Xing Sheng Xu, Wei Xi

Keywords:

Group Velocity, Photonic Crystal Waveguide, Transmission

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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