Coupled mode theory analysis of mode-splitting in coupled cavity system
2010 (English)In: Optics Express, ISSN 1094-4087, Vol. 18, no 8, 8367-8382 p.Article in journal (Refereed) Published
We analyze transmission characteristics of two coupled identical cavities, of either standing-wave (SW) or traveling-wave (TW) type, based on temporal coupled mode theory. Mode splitting is observed for both directly (cavity-cavity) and indirectly (cavity-waveguide-cavity) coupled cavity systems. The effects of direct and indirect couplings, if coexisting in one system, can offset each other such that no mode splitting occurs and the original single-cavity resonant frequency is retained. By tuning the configuration of the coupled cavity system, one can obtain different characteristics in transmission spectra, including splitting in transmission, zero transmission, Fano-type transmission, electromagnetically-induced-transparency (EIT)-like transmission, and electromagnetically-induced-absorption (EIA)-like transmission. It is also interesting to notice that a side-coupled SW cavity system performs similarly to an under-coupled TW cavity. The results are useful for the design of cavity-based devices for integration in nanophotonics.
Place, publisher, year, edition, pages
2010. Vol. 18, no 8, 8367-8382 p.
3-DIMENSIONAL PHOTONIC-CRYSTAL, RING RESONATORS, WAVE-GUIDE, FILTERS, LINE, NANOCAVITY, CHIP
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-28273DOI: 10.1364/OE.18.008367ISI: 000276610300087ScopusID: 2-s2.0-77950871733OAI: oai:DiVA.org:kth-28273DiVA: diva2:387422
FunderSwedish Research Council
QC 201101142011-01-142011-01-122011-03-15Bibliographically approved