Dynamic group velocity control in a mechanically tunable photonic-crystal coupled-resonator optical waveguide
Name
Tian-2009-Dynamic group velocity control in a mechanically tunable photonic-crystal coupled-resonator.pdf
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1.03 MB
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Adobe PDF
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Author(s)
Tian, Kehan
Arora, William J.
Takahashi, Satoshi
Hong, John
Barbastathis, George
Date Issued
October 2009
Journal
Physical Review B
Publisher
American Physical Society
Citation
Tian, Kehan et al. “Dynamic group velocity control in a mechanically tunable photonic-crystal coupled-resonator optical waveguide.” Physical Review B 80.13 (2009): 134305. © 2009 The American Physical Society
Version
Final published version
Abstract
We describe a tunable slow light device based on a photonic-crystal with a mechanically adjustable coupled-resonator optical waveguide structure. The lateral energy confinement is implemented along a lattice shear defect with the group velocity actively controlled by shifting the shear along the defect interface over a distance of one crystal period. The group velocity tuning range can be anywhere from arbitrarily small (determined by the waveguide structure) to near the value expected in bulk media. We present the theory and a demonstration (via simulation) of a device configuration that is realistic to fabricate and achieves a tunable range of group velocity spanning at least three orders of magnitude. The conditions for stopping the light are also discussed for different configurations.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevB.80.134305
