Title :
Photonic Crystal Slab Waveguides Based on Antiresonant Reflecting Optical Waveguide Structures
Author :
Yang, Yu-Lin ; Hsu, Shih-Hsin ; Lu, Ming-Feng ; Huang, Yang-Tung
Author_Institution :
Dept. of Electron. Eng. & Inst. of Electron., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fDate :
7/15/2009 12:00:00 AM
Abstract :
A novel two-dimensional photonic crystal slab waveguide based on an antiresonant reflecting optical waveguide (ARROW) structure is proposed and designed. Lightwaves propagating in this waveguide are confined by antiresonance reflection vertically and the photonic band gap laterally. In order to obtain the characteristics of the ARROW-based photonic crystal waveguides, the three-dimensional finite-difference time-domain simulations are performed. With a lateral adiabatic taper, a coupling efficiency of 80.3% from a single-mode fiber to the ARROW-based photonic crystal waveguide of a single-line defect is obtained. In addition, propagation losses less than 10 dB/mm and bend losses of 0.23 and 0.39 dB/bend for the designed 60deg and 120deg bends are achieved at an operating wavelength of 1.55 mum.
Keywords :
finite difference time-domain analysis; light reflection; optical fibre couplers; optical losses; optical materials; optical waveguides; photonic band gap; photonic crystals; ARROW structure; antiresonant reflecting optical waveguide structure; bend losses; lateral adiabatic taper; lightwave propagation; photonic band gap; photonic crystal slab waveguide; propagation losses; single-line defect; single-mode fiber coupling; three-dimensional finite-difference time-domain simulation; two-dimensional photonic crystal; wavelength 1.55 mum; Finite difference methods; Optical design; Optical propagation; Optical reflection; Optical waveguides; Photonic band gap; Photonic crystals; Propagation losses; Slabs; Waveguide discontinuities; Antiresonant reflecting optical waveguide (ARROW); bending waveguide; finite-difference time-domain (FDTD) method; photonic crystals (PCs); propagation loss;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2009.2014692
