DocumentCode :
15768
Title :
High-Transmission-Efficiency 120 
Photonic Crystal Waveguide Bend by Using Flexible Structural Defects
Author :
Tee, D.C. ; Tamchek, N. ; Abu Bakar, M.H. ; Mahamd Adikan, F.R.
Author_Institution :
Dept. of Electr. Eng., Univ. of Malaya, Kuala Lumpur, Malaysia
Volume :
6
Issue :
4
fYear :
2014
fDate :
Aug. 2014
Firstpage :
1
Lastpage :
10
Abstract :
We numerically studied a high-output-transmission-efficiency low-reflection-loss 120° photonic crystal (PhC) waveguide bend based on a PhC slab with triangular-lattice air holes. The desired high output transmission efficiency was achieved by introducing flexible structural defects into the bend region of the waveguide. Simulation results obtained using a 3-D finite-difference time-domain method indicated that normalized output transmission as high as 94.3% and negligible normalized reflection loss of 0.1% were obtained at the 1550-nm optical wavelength. Furthermore, the normalized output transmission was more than 90% within the entire optical C-band. In addition, sensitivity of the design parameters of the structural defect was studied to understand the tolerance in the fabrication error, while maintaining high output transmission efficiency.
Keywords :
finite difference time-domain analysis; optical design techniques; optical fabrication; optical losses; optical waveguides; photonic crystals; 3-D finite-difference time-domain method; PhC slab; fabrication error; flexible structural defects; high transmission efficiency; low reflection loss PhC waveguide; normalized output transmission; optical C-band; photonic crystal waveguide bend; triangular-lattice air holes; wavelength 1550 nm; DH-HEMTs; Optical waveguides; Photonic crystals; Reflection; Slabs; Vectors; Photonics crystal; optical interconnects; waveguide devices; waveguides;
fLanguage :
English
Journal_Title :
Photonics Journal, IEEE
Publisher :
ieee
ISSN :
1943-0655
Type :
jour
DOI :
10.1109/JPHOT.2014.2344000
Filename :
6872784
Link To Document :
