Title :
Controlling coupling of guided to radiating modes using adiabatic transitions between waveguides of different curvature
Author :
Berlatzky, Yoav ; Shtrichman, Itay ; Narevich, Romanas ; Narevicius, Edvardas ; Rosenblum, Gershon ; Vorobeichik, Ilya
Author_Institution :
Phys. Dept., Technion-Israel Inst. of Technol., Haifa, Israel
fDate :
3/1/2005 12:00:00 AM
Abstract :
A simple method for designing adiabatic transitions between straight and curved waveguides is presented. This method results in lower coupling from guided to radiating modes than conventional methods based on introducing an abrupt offset at the junction point. With the new adiabatic transition design, a decrease of 5 to 10 dB in the low-level radiating light cone is found compared with the traditional method.
Keywords :
integrated optics; optical couplers; optical design techniques; optical waveguides; waveguide junctions; adiabatic transitions; guided-radiating mode coupling; waveguides; Interference; Optical coupling; Optical losses; Optical planar waveguides; Optical propagation; Optical waveguides; Planar waveguides; Resonance; Solid modeling; Waveguide transitions; Integrated optics; optical losses; optical planar waveguides; waveguide bends;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2004.840006
