Mechanically switchable photonic crystal filter with either all-pass transmission or flat-top reflection characteristics |
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| Authors: | Suh Wonjoo Fan Shanhui |
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| Affiliation: | Department of Electrical Engineering, Stanford University, Stanford, California 94305, USA. |
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| 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. |
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