Title :
Sidelobes Suppression of Periodically Placed Resonators Side-Coupled to Photonic Crystal Waveguide
Author :
Li, H.H. ; Xu, K. ; Wu, J. ; Lin, J.T.
Author_Institution :
Key Lab. of OCLT, Beijing Univ. of Posts & Telecommun.
Abstract :
Apodization technique is applied to suppress sidelobes in the reflection spectrum of periodically placed resonators side-coupled to photonic crystal waveguide. Good agreement is obtained between theoretical analysis by transfer-matrix method derived from coupled mode theory in time and simulation experiments. Furthermore, phase response of the reflection filter is investigated to analyze the transmission of pulses when applied to optical transmission system by transfer-matrix method. As a result of apodization, pulse delay appears due to decreased full-width at half-maximum of Gaussian taper function. Even asymmetric pulse with oscillatory structure is observed when the full-width at half-maximum of Gaussian taper function gets larger
Keywords :
coupled mode analysis; optical materials; optical resonators; optical waveguide filters; optical waveguide theory; photonic crystals; transfer function matrices; Gaussian taper function; apodization technique; asymmetric pulse; coupled mode theory; optical pulse transmission system; oscillatory structure; photonic crystal waveguide; reflection filter; reflection spectrum; side-coupled resonators; sidelobe suppression; transfer-matrix method; Analytical models; Coupled mode analysis; Couplings; Optical filters; Optical pulses; Optical reflection; Optical resonators; Optical waveguide theory; Optical waveguides; Photonic crystals;
Conference_Titel :
Optical Fiber Communication & Optoelectronic Exposition & Conference, 2006. AOE 2006. Asian
Conference_Location :
Shanghai
Print_ISBN :
978-0-9789217-0-5
DOI :
10.1109/AOE.2006.307355
