Comments on photonic shells

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Optical properties of a photonic crystal of hollow spherical shells

We report on optical transmission studies of three-dimensionally ordered photonic crystals of close-packed spherical shells. These samples are fabricated using a double-template method, which allows for extensive control over shell thickness. The transmission spectra exhibit an optical stop band, whose spectral position and width depend on the thickness of the shell and on the overlap between a...

Trapping photons by a line singularity

We present cylindrically symmetric, static solutions of the Einstein field equations around a line singularity such that the energy momentum tensor corresponds to infinitely thin photonic shells. Positivity of the energy density of the thin shell and the line singularity is discussed. It is also shown that thick shells containing mostly radiation are possible by a numerical solution. PACS numbe...

Feasibility of manipulating the lifetime and speed of light in a matrix of metallodielectric cylinders

We consider two-dimensional three-component photonic crystals wherein one component is modeled as an electron gas. The problem is treated within the plane wave formalism. For the case of an incident electromagnetic wave with electric field vector parallel to the axis of the cylinders it is shown that the presence of dielectric shells covering the metallic cylinders leads to a closing of the str...