Compact Microring Resonator With 2 x 2 Tapered Multimode Interference Couplers
2009 (English)In: Journal of Lightwave Technology, ISSN 0733-8724, E-ISSN 1558-2213, Vol. 27, no 21, 4878-4883 p.Article in journal (Refereed) Published
Compact microring resonator devices are realized by using a small SU-8 polymer strip waveguide that has an SU-8 polymer core (n similar to 1.573), an SiO2 buffer (n similar to 1.445), and an air cladding. Due to the high index contrast of the optical waveguide, a small bending radius (similar to 150 mu m) is used for the MRR. To enhance the coupling between the access optical waveguides and the microring, 2 x 2 multimode interference couplers are used. The measured spectral response of the through port shows a high extinction ratio of over 15 dB and a 3-dB bandwidth of about 0.38 nm (corresponding to a moderate Q-value of similar to 4500).
Place, publisher, year, edition, pages
2009. Vol. 27, no 21, 4878-4883 p.
Microring, multimode interference (MMI), SU-8, optical wave-guides, polymer
IdentifiersURN: urn:nbn:se:kth:diva-18748DOI: 10.1109/jlt.2009.2030144ISI: 000269709800002OAI: oai:DiVA.org:kth-18748DiVA: diva2:336795
QC 201005252010-08-052010-08-052013-11-19Bibliographically approved