Title :
Far Field of Bragg Reflection Waveguides: Characteristics and Closed-Form Approximation
Author :
Zareian, Nima ; Abolghasem, Payam ; Helmy, Amr S.
Author_Institution :
Edward S. Rogers Sr. Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada
fDate :
3/1/2011 12:00:00 AM
Abstract :
A comprehensive study of the far-field diffraction pattern of Bragg reflection waveguides is presented. Using a Gaussian approximation of the near-field profile, an analytical formula for the far-field pattern of the fundamental Bragg mode is obtained. The proposed closed-form representation offers a powerful technique for examining the far-field characteristics, which provides insight into the design optimization of Bragg reflection waveguides.
Keywords :
Bragg gratings; Gaussian distribution; optical waveguides; Bragg mode; Bragg reflection waveguides; Gaussian approximation; closed-form approximation; far-field diffraction pattern; far-field pattern; Bragg reflection waveguides (BRWs); diffraction theory; far field; transverse Bragg reflector;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2010.2102741
