Title :
Anomalous losses in curved waveguides and directional couplers at “magic widths”
Author :
Tummidi, Ravi S. ; Nguyen, Thach ; Mitchell, Arnan ; Koch, Thomas L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Lehigh Univ., Bethlehem, PA
Abstract :
We show that recently-demonstrated ldquomagic widthrdquo designs to mitigate TM-like mode radiation losses in high-index-contrast SOI ridge waveguides are significantly impacted by waveguide curvature and coupling elements, requiring additional care in designing high-Q SOI photonics.
Keywords :
Q-factor; optical design techniques; optical directional couplers; optical losses; ridge waveguides; silicon-on-insulator; Si-SiO2; TM-like mode radiation losses; anomalous losses; curved waveguides; directional couplers; high-Q SOI photonics; high-index-contrast SOI ridge waveguides; magic width design; waveguide curvature; Directional couplers; Loss measurement; Optical design; Optical filters; Optical interferometry; Optical losses; Optical resonators; Optical sensors; Optical waveguides; Waveguide components; Guided Waves; Integrated OpticMaterials;
Conference_Titel :
IEEE Lasers and Electro-Optics Society, 2008. LEOS 2008. 21st Annual Meeting of the
Conference_Location :
Acapulco
Print_ISBN :
978-1-4244-1931-9
Electronic_ISBN :
978-1-4244-1932-6
DOI :
10.1109/LEOS.2008.4688721
