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Updated: Jul 19, 2026

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
Published on: September 26, 2014
Dispersion spectroscopy of photonic lattices
Andrea Fratalocchi1, Gaetano Assanto
1Nonlinear Optics and OptoElectronics Laboratory (NooEL) Department of Electronics Engineering and CNISM, University Roma Tre, Rome, Italy. frataloc@uniroma3.it
Abstract:
We theoretically demonstrate how to acquire the full bandgap spectrum of a photonic lattice of arbitrary profile. Focusing on the 1D case in the presence of a linear refractive index acceleration and employing a multiscale analysis, we show that each photonic band can be directly mapped by the light evolution in the lattice, whereas the size of each gap corresponds to the tunneling rate. We verify the analytical results with numerical simulations and discuss experimental realizations of this technique for dispersive spectroscopy.
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