Vertically coupled photonic crystal optical filters
2005 (English)In: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 30, no 12, 1476-1478 p.Article in journal (Refereed) Published
A novel design of optical filters, based on the vertical coupling between channel waveguides and photonic crystal microcavities, is proposed. The choice of channel waveguides can be arbitrary because of the flexibility of the device geometry, which makes it possible to utilize conventional low-loss waveguides. The separation between waveguides and microcavities, which determines filter bandwidths and drop efficiencies, can be accurately controlled by material growth (or deposition). The filters might also be switchable, e.g., by mechanical movements of microcavities. An example of a reflection-type optical filter is demonstrated in numerical experiments using the finite-difference time-domain method.
Place, publisher, year, edition, pages
2005. Vol. 30, no 12, 1476-1478 p.
IdentifiersURN: urn:nbn:se:kth:diva-14818ISI: 000229689400016ScopusID: 2-s2.0-20944449616OAI: oai:DiVA.org:kth-14818DiVA: diva2:332859
QC 201005252010-08-052010-08-05Bibliographically approved