Improved performance of a silicon-on-insulator-based multimode interference coupler by using taper structures
2005 (English)In: Optics Communications, ISSN 0030-4018, E-ISSN 1873-0310, Vol. 253, no 4-6, 276-282 p.Article in journal (Refereed) Published
Multimode effects in a multimode interference (MMI) coupler based on silicon-on-insulator (SOI) are analyzed. Multimode interference in the vertical direction of an SOI-based MMI device degrades the self-imaging quality. Taper structures are introduced at the junction between input/output waveguides and multimode region to suppress the excitation of the undesired vertical modes. A 1 x 4 MMI coupler of low insertion loss (0.101 dB) and small non-uniformity (0.102 dB) is designed as a numerical example.
Place, publisher, year, edition, pages
2005. Vol. 253, no 4-6, 276-282 p.
multimode interference, self-imaging, modal propagation analysis, silicon on insulator, tapered structure, vertical modes
IdentifiersURN: urn:nbn:se:kth:diva-15031DOI: 10.1016/j.optcom.2005.04.078ISI: 000231779700007ScopusID: 2-s2.0-24144437464OAI: oai:DiVA.org:kth-15031DiVA: diva2:333072
QC 201005252010-08-052010-08-052013-11-19Bibliographically approved