Add-drop filters in three-dimensional layer-by-layer photonic crystals using waveguides and resonant cavities

A three-dimensional layer-by-layer photonic crystal with a complete photonic band gap is used to experimentally and theoretically demonstrate a sharp tunable bandpass filter. The structure consists of input and output waveguide sections coupled through a nearby cavity. The authors show experimentall...

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Bibliographic Details
Published in:Applied physics letters 2006-12, Vol.89 (23), p.231103-231103-3
Main Authors: Kohli, Preeti, Christensen, Caleb, Muehlmeier, Jason, Biswas, Rana, Tuttle, Gary, Ho, Kai-Ming
Format: Article
Language:English
Subjects:
CAVITIES
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
PHYSICS
WAVEGUIDES
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Summary:A three-dimensional layer-by-layer photonic crystal with a complete photonic band gap is used to experimentally and theoretically demonstrate a sharp tunable bandpass filter. The structure consists of input and output waveguide sections coupled through a nearby cavity. The authors show experimentally and verify with finite difference time domain simulations that this configuration is a bandpass filter where a particular resonant frequency of the cavity is selected from the input guide and transmitted to the output guide leaving out other input frequencies. An excellent coupling efficiency near 100% between the waveguide and the cavity is found for the drop frequencies.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2400398