Title :
Suppression sidelobes of AOTF with different weighting functions
Author :
Yue-hong, Zhu ; Hai, Qi ; Ji-hua, Wen ; Qiang, Liu ; Yuan, Wang
Author_Institution :
Hebei Key Laboratory of Optoelectronic Information and Geo-detection Technology, Shijiazhuang University of Economics, 050031, China
Abstract :
AOTF has sidelobe as well as other filters and sidelobe level reaches to some extent, cross-talk will occur, then sidelobe suppression becomes essential. Ways of Apodization are birefringent apodization, weighted coupling, etc. The optimal optical filter responses of AOTF with weighting function is gained, which is lower than −41dB.
Keywords :
Acoustic waveguides; Acoustic waves; Directional couplers; Equations; Frequency; Optical filters; Optical surface waves; Optical tuning; Optical waveguides; Surface acoustic waves;
Conference_Titel :
Communications and Photonics Conference and Exhibition (ACP), 2009 Asia
Conference_Location :
Shanghai, China
Print_ISBN :
978-1-55752-877-3
Electronic_ISBN :
978-1-55752-877-3
