Sensitive label-free and compact biosensor based on concentric silicon-on-insulator microring resonators
2009 (English)In: Applied Optics, ISSN 0003-6935, E-ISSN 1539-4522, Vol. 48, no 25, F90-F94 p.Article in journal (Refereed) Published
We propose an ultracompact parallel label-free biosensor based on concentric silicon-on-insulator microring resonators. Our numerical studies show that the proposed biosensor offers higher sensitivity and a larger detection area than conventional single-ring-based sensors. We analyze the detection sensitivity of the DNA hybridization by immobilizing the probe on top of the double concentric ring resonators and in the ring-ring air gap. For a concentric double-ring system with an area of 27: 646 mu m(2), the bulk detection sensitivity is 683 nm RIU-1. The sensitive uniformity of the system related to the optical field distribution is also studied.
Place, publisher, year, edition, pages
2009. Vol. 48, no 25, F90-F94 p.
SENSOR, INTERFEROMETER, FILTERS
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-30677DOI: 10.1364/AO.48.000F90ISI: 000270117200016ScopusID: 2-s2.0-70249143946OAI: oai:DiVA.org:kth-30677DiVA: diva2:403029
QC 20110310 Asia Optical Fiber and Optoelectronic Exposition and Conference 2008, Shanghai, PEOPLES R CHINA, OCT 30-NOV 02, 20082011-03-102011-03-042011-03-10Bibliographically approved