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Updated: Jun 23, 2026

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
Published on: September 26, 2014
The Bragg gap vanishing phenomena in one-dimensional photonic crystals
Hui Zhang1, Xi Chen, Youquan Li
1College of Electronic Science and Engineering, National University of Defense Technology, Changsha, HuNan, PR China. huizhange@gmail.com
Abstract:
We theoretically deduce the Bragg gap vanishing conditions in one-dimensional photonic crystals and experimentally demonstrate the m=0 band-gap vanishing phenomena at microwave frequencies. In the case of mismatched impedance, the Bragg gap will vanish as long as the discrete modes appear in photonic crystals containing dispersive materials, while for the matched impedance cases, Bragg gaps will always disappear. The experimental results and the simulations agree extremely well with the theoretical expectation.
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