Erbium and ytterbium codoped titanoniobophosphate glasses for ion-exchange-based planar waveguides

This work presents the optical properties of erbium-doped\ud and erbium/ytterbium codoped Na2O–Al2O3–TiO2–Nb2O5–\ud P2O5 glass systems and also the characterization of planar waveguides\ud obtained by typical thermally assisted Ag12Na1 ionexchange\ud process. The glass systems allow the preparation of\ud single mode and multimode planar waveguides presenting a\ud strong and relatively broad emission at 1536 nm. The emission\ud signal in the infrared region is intensified for silver-containing\ud samples when compared with free-silver samples. The emission\ud signal intensification may be attributed to a nonplasmonic energy\ud transfer from silver species to Er31 ions as no bands related to\ud surface plasmon resonance (SPR) of silver nanoparticles were\ud observed.CNPqFAPESPMC