A hybrid modeling for the theoretical analysis of reflections in a multimode-interference coupler based on silicon-on-insulator nanowires
2008 (English)In: Optics Communications, ISSN 0030-4018, E-ISSN 1873-0310, Vol. 281, no 11, 3099-3104 p.Article in journal (Refereed) Published
A hybrid method combining the three-dimensional (3D) beam propagation method (BPM) and a 3D finite-difference time-domain (FDTD) method is presented for the simulation of multimode-interference (MMI) couplers based on silicon-on-insulator (SOI) nanowires. This hybrid method makes it possible to have a robust analysis for the reflection properties while avoiding a time-consumed computation with a simplex 3D-FDTD simulation. The reflected power is sensitive to both the length and the width of the MMI coupler and thus one should choose the optimal values for good self-imaging. Furthermore, the reflection could be reduced by introducing tapers between the MMI section and the access waveguides.
Place, publisher, year, edition, pages
2008. Vol. 281, no 11, 3099-3104 p.
multimode-interference coupler, finite-difference time-domain method, beam propagation method, reflection, taper
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-17508DOI: 10.1016/j.optcom.2008.01.061ISI: 000255575400014ScopusID: 2-s2.0-41849146040OAI: oai:DiVA.org:kth-17508DiVA: diva2:335552
QC 201005252010-08-052010-08-052013-11-19Bibliographically approved