.Optimal design of a multi-mode interference splitter based on SOI[J].Optoelectronics Letters,2008,4(2):92-95 Optimal design of a multi-mode interference splitter based on SOI SONG Wei(School of Optoelectronic Information,University of Electronic Science and Technology of China,Chengdu 610054,China) ; XIE Kang (School of Optoelectronic Information,University of Electronic Science and Technology of China,Chengdu 610054,China) ; Abstract:       In this paper,the multimode waveguide lengths and the output port locations of a SOI(silicon on insulator)material-based 1x4 MMI(multimode interference)optical splitter are optimized by means of FD-BPM (finite difference-beam propaga-tion method).An improved 1x4 MMI optical splitter is designed.Compared with an usual optical splitter,a smaller loss O.12dB and a better output port power uniforrnity 0.11dB are achieved for the optical signal transmission. Hits: 3479 Download times: 229 View Full Text    Download reader