Chapter 6

Photonic Bandgap Glass-Based Structures

M. Clara and Amadeu Griol

Abstract

Photonic crystals (PCs) as it is often called photonic band gap materials (PBGs), are artificial composite materials, micro/nanostructured on an optical length scale (e.g. few hundreds of nm). The resulting periodicity in the dielectric constant is responsible for inhibiting light from propagating through the material as a result of Bragg diffraction. The forbidden frequency range is called a stop band. In PCs the electromagnetic waves within the band gap are completely reflected by the crystal, while spontaneous emission (within the band gap) are totally concealed. </p><p> This chapter introduces the physical concepts behind PC structures, along with bottomup fabrication methods, properties, and applications.

Total Pages: 107-130 (24)

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