Title :
The design of grating couplers with ultra-low radiation loss
Author :
Ramadan, Tarek A.
Author_Institution :
Electron. & Electr. Commun., Ain Shams Univ., Cairo, Egypt
Abstract :
A new approach is developed and used to minimize radiation loss in grating couplers. A comparison between different grating designs in a 2×2 backward coupler demonstrates that two parallel gratings can significantly reduce radiation loss.
Keywords :
diffraction gratings; optical couplers; optical losses; optical waveguide theory; waveguide discontinuities; 2×2 backward coupler; TE modes; bi-directional beam propagation method; coupled optical waveguides; grating couplers; grating designs; lossless waveguide discontinuities; numerical computations; parallel gratings; radiation loss minimization; ultra-low radiation loss; Arrayed waveguide gratings; Couplers; Design engineering; Optical losses; Optical scattering; Optical waveguides; Tellurium; Transmission line matrix methods; Waveguide discontinuities; Waveguide junctions;
Conference_Titel :
Lasers and Electro-Optics Society, 2002. LEOS 2002. The 15th Annual Meeting of the IEEE
Print_ISBN :
0-7803-7500-9
DOI :
10.1109/LEOS.2002.1159558
