Title :
Apodized Focusing Fully Etched Subwavelength Grating Couplers
Author :
Yun Wang ; Han Yun ; Zeqin Lu ; Bojko, Richard ; Wei Shi ; Xu Wang ; Flueckiger, Jonas ; Fan Zhang ; Caverley, Michael ; Jaeger, Nicolas A. F. ; Chrostowski, Lukas
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of British Columbia, Vancouver, BC, Canada
Abstract :
We experimentally demonstrate apodized focusing subwavelength grating couplers for both the fundamental transverse electric (TE00) mode and the fundamental transverse magnetic (TM00) mode. A measured insertion loss of 3.2 dB with a 1-dB bandwidth of 36 nm has been obtained for the TE00 mode, and a measured insertion loss of 3.3 dB with a 1-dB bandwidth of 37 nm has been obtained for the TM00 mode. Back reflections of -24 dB and -21 dB have been obtained for the TE00 and TM00 modes, respectively.
Keywords :
diffraction gratings; integrated optics; optical couplers; optical design techniques; optical losses; silicon-on-insulator; SOI; Si; TE00 mode; TM00 mode; apodized focusing fully etched subwavelength grating couplers; back reflections; fundamental transverse magnetic mode; insertion loss; silicon-on-insulator; transverse electric mode; Couplers; Fabrication; Focusing; Gratings; Indexes; Insertion loss; Optical waveguides; Gratings; Subwavelength structures; gratings;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2015.2426879
