Mechanically switchable photonic crystal filter with either all-pass transmission or flat-top reflection characteristics
- 1 October 2003
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 28 (19) , 1763-1765
- https://doi.org/10.1364/ol.28.001763
Abstract
We theoretically introduce a new type of optical all-pass filter based on guided resonance in coupled photonic crystal slabs. The filter exhibits near-complete transmission for both on- and off-resonant frequencies and yet generates large resonant group delay. We further show that such a filter can be mechanically switched into a flat-top band rejection filter.Keywords
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