DocumentCode :
849924
Title :
Mode Analysis and Design of a Low-Loss Photonic Crystal 60 
Waveguide Bend
Author :
Ren, Gang ; Zheng, Wanhua ; Zhang, Yejin ; Wang, Ke ; Du, Xiaoyu ; Xing, Mingxin ; Chen, Lianghui
Author_Institution :
Nano-Optoelectron. Lab., Chinese Acad. of Sci., Beijing
Volume :
26
Issue :
14
fYear :
2008
fDate :
7/15/2008 12:00:00 AM
Firstpage :
2215
Lastpage :
2218
Abstract :
The guided modes of a two-dimensional photonic crystal straight waveguide and a waveguide bend are studied in order to find the high transmission mechanism for the waveguide bend. We find that high transmission occurs when the mode patterns and wave numbers match, while the single-mode condition in the waveguide bend is not necessarily required. According to the mechanism, a simply modified bend structure with broad high transmission band is proposed. The bandwidth is significantly increased from 19 to 116 nm with transmission above 90%, and covers the entire C band of optical communication.
Keywords :
integrated optics; optical design techniques; optical waveguides; photonic crystals; waveguide discontinuities; C band; broad transmission band; frequency 4 GHz to 8 GHz; guided modes; low-loss photonic crystal; mode analysis; mode patterns; optical communication; photonic crystal design; photonic crystal integrated circuits; photonic crystal waveguide; single-mode condition; straight waveguide; two-dimensional photonic crystal; waveguide bend; Bandwidth; Finite difference methods; Image analysis; Optical waveguides; Pattern matching; Photonic band gap; Photonic crystals; Planar waveguides; Propagation losses; Time domain analysis; Bandwidth; finite-difference time-domain (FDTD); photonic crystal; waveguide bend;
fLanguage :
English
Journal_Title :
Lightwave Technology, Journal of
Publisher :
ieee
ISSN :
0733-8724
Type :
jour
DOI :
10.1109/JLT.2008.922301
Filename :
4610000
Link To Document :
