Thermo-optic properties of oxidised porous silicon impregnated with index-matching liquids for active optical components

Joël Charrier (1) , Parastesh Pirasteh (1) , Nicole Pedrono (1) , Pierre Joubert (1) , Lazhar Haji (1) , Dominique Bosc (1)

1 Laboratoire d'Optronique

Oxidised porous layers (OPS) were impregnated with index-matching liquids with high thermo-optical coefficient. In this paper, we will present some results on the evolution of the refractive index of impregnated OPS, as a function of the temperature. Refractive index linearly varies with temperature. The thermo-optical coefficients of OPS/liquid composite material have been measured. They directly depend on the OPS porosity. We have shown that the experimental results are in agreement with the temperature variations of the refractive index calculated using the effective medium Bruggeman model. The existence of a switching temperature Ts in impregnated two-layer plane waveguides has been demonstrated and the possibility for obtaining thermo-optical switches is discussed.

Domaines: Optique [physics.optics]

Joël Charrier, Parastesh Pirasteh, Nicole Pedrono, Pierre Joubert, Lazhar Haji, et al.. Thermo-optic properties of oxidised porous silicon impregnated with index-matching liquids for active optical components. Porous Semiconductors - Science and Technology 3th international conference (PSST 2002), Mar 2002, Puerto de la Cruz, Spain. pp.288-292, ⟨10.1002/pssa.200306483⟩. ⟨hal-00151998⟩