Title :
Optimization of Optical Delay Lines based on Photonic Crystal Coupled Cavity Waveguides
Author :
Gujjula, Amith ; Sabarinathan, Jayshri
Author_Institution :
Univ. of Western Ontario, London
Abstract :
In this paper photonic crystal (PC) based coupled cavity waveguides (CCW) were investigated for their true-time delay properties. Linear CCWs formed in a triangular lattice of air holes etched into a dielectric slab were optimized to obtain maximum possible time delays with minimum transmission losses. Depending upon the PC and cavity configurations used, delays in a wide range (0.1 - 0.6 picoseconds for every 1 mum length of CCW) were obtained. These linear waveguides would be ideal to replace conventional phase shifters in the beamforming network of phased array antennas as the effective travel path can be reduced by 52 times as compared to free-space.
Keywords :
antenna phased arrays; microwave photonics; optical delay lines; optical losses; optical waveguides; photonic crystals; air holes; beamforming network; dielectric slab; linear waveguides; optical delay lines optimization; phased array antenna; photonic crystal coupled cavity waveguides; size 1 mum; time 0.1 ps to 0.6 ps; time delays; transmission losses; triangular lattice; true-time delay properties; Delay lines; Dielectric losses; Etching; Lattices; Linear antenna arrays; Optical coupling; Optical waveguides; Phased arrays; Photonic crystals; Propagation delay; Photonic crystal; coupled cavity waveguides; optical delay lines; phased array antenna;
Conference_Titel :
Microwave Symposium, 2007. IEEE/MTT-S International
Conference_Location :
Honolulu, HI
Print_ISBN :
1-4244-0688-9
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2007.380372
