Title :
Flat Band Slow Light in Symmetric Line Defect Photonic Crystal Waveguides
Author :
Hou, Jin ; Gao, Dingshan ; Wu, Huaming ; Hao, Ran ; Zhou, Zhiping
Author_Institution :
F212 Wuhan Nat. Lab. for Optoelectron., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
Flat band slow light in symmetric line defect photonic crystal waveguides formed by adding dielectric pillars in the air holes nearest to the waveguide core is investigated. By adjusting the radii of the new dielectric pillars, a linear band in the photonic band structure appears which denotes low group velocity dispersion. High average group index of 74.4 with 2.3-nm bandwidth is demonstrated in an optimized waveguide by finite-difference time-domain simulation.
Keywords :
finite difference time-domain analysis; optical dispersion; optical waveguides; photonic crystals; slow light; dielectric pillars; finite-difference time-domain simulation; flat band slow light; group velocity dispersion; photonic crystal waveguides; symmetric line defect; waveguide core; Dispersion; photonic crystal (PC); slow light;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2030160
