Lightwave circuits based on organic materials for optical signal filtering and switching in WDM communication systems

Periodic structures are suitable to make wavelength selective photonic devices for a large variety of applications ranging from fiber optic communications, biosensors, and lasers. We present our experimental and simulation results on guided wave devices, which can be switched and tuned electrically and optically by light driving signals in micro-and nanostructured device geometries. Wavelength selectivity is obtained by using either the phenomenon known as whispering gallery modes in microsphere resonator or Bragg diffraction. In both cases we consider organic materials as medium to tune spectral response of the proposed devices.