Propagation of light in quasi-regular dielectric heterostructures with delta-like layers

Propagation of light is studied in dielectric systems bearing a quasi-regular distribution of delta-like layers with different refraction indices. Special emphasis is made on the possibility to fabricate heterostructures based on porous silicon. The model calculation includes Fibonacci, Thue-Morse, and Period-Doubling porous-silicon-based systems. Experimental results are also presented for porous-silicon Thue-Morse dielectric layered systems.