A One-Dimensional Photonic Bandgap System as High-Reflectivity Mirror for Microwave and THz Applications
Abstract
A one-dimensional photonic bandgap mirror (PBM) has been designed consisting of periodically alternating planar quarter-wavelength layers of a high-refractive index dielectric and low-refractive index material (e.g. vacuum). A V-shaped folded Fabry-Perot Interferometer was set up with two scaled PBMs and a spherical metal mirror to provide a stable resonator design. The PBMs consisted of polystyrene and air as dielectrics and were designed for a center frequency of 23.44 GHz. The transmission characteristics of the FPI was measured for different numbers of layers in the PBMs. The reflectivity of the PBMs was derived from the cavity's chromatic resolving power. The measured reflectivity and bandwidth are compared with theoretical expectations taking into account resonator losses and absorption in the dielectrics.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 29, 2000
- Accession Number
- ADP011775
Entities
People
- Gerhard W. Schwaab