One-dimensional porous-silicon photonic band-gap structures with tunable reflection and dispersion

The method of fabrication of porous-silicon multilayer structures with periodically modulated porosity was used to obtain one-dimensional photonic band-gap structures with tunable reflection and dispersion. We present the results of transfer-matrix calculations of reflection and dispersion properties of such photonic band-gap structures illustrating the idea of fabricating one-dimensional porous-silicon photonic band-gap broadband reflectors and elements to control parameters of short light pulses. Reflection spectra of the fabricated porous-silicon multilayers indicate that the reflection and dispersion properties of 1D porous-silicon PEG structures can be precisely controlled by varying the parameters of the technological process.