Title :
Theory and experiments on grating couplers for thin-film waveguides
Author :
Ghizoni, C.C. ; Bor-Uei Chen ; Chung Tang
Author_Institution :
School of Electrical Engng., Cornell Univ., Ithaca, NY, USA
fDate :
2/1/1976 12:00:00 AM
Abstract :
A theoretical and experimental study is made of the grating couplers for thin-film waveguides. It is shown that the perturbation series expansion of the field based upon the Green´s function approach can actually be summed to all orders to give an expression for the efficiency of grating couplers of arbitrary thickness. The results obtained by this theory are in good agreement with the experimental results obtained. It is also shown that the grating coupling efficiency depends strongly on the grating profile.
Keywords :
diffraction gratings; optical waveguides; waveguide couplers; Green´s function approach; arbitrary thickness; efficiency; grating couplers; perturbation series expansion; profile dependence; thin film waveguides; Couplers; Diffraction; Gratings; Optical coupling; Optical propagation; Optical scattering; Optical waveguides; Scanning electron microscopy; Transistors; Waveguide theory;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.1976.1069099
