Disorder-Immune Coupled Resonator Optical Waveguide
We demonstrate that a photonic lattice with short- and long-range harmonic modulations of the refractive index facilitates formation of flat photonic bands and leads to slow propagation of light. The system can be considered a coupled-resonator optical waveguide (CROW): photonic bands with abnormally small dispersion are created due to the interaction of long-lived states in the cavity regions via weak coupling across tunneling barriers. Unlike previous CROW implementations, the proposed structures can be fabricated with interference photolithography (holography), sidestepping the issue of resonator-to-resonator fluctuation of the system parameters. The proposed holography-based approach enables fabrication of arrays with a large number of coupled optical resonators, which is necessary for practical applications.
A. Yamilov and M. F. Bertino, "Disorder-Immune Coupled Resonator Optical Waveguide," Optics letters, Optical Society of America, Jan 2007.
The definitive version is available at http://dx.doi.org/10.1364/OL.32.000283
University of Missouri--Rolla
Keywords and Phrases
Coupled-Resonator Optical Waveguide; Flat Photonic Bands; Photonic Lattice
Article - Journal
© 2007 Optical Society of America, All rights reserved.