Author/Authors :
Chiasera، نويسنده , , A. and Armellini، نويسنده , , C. and Bhaktha، نويسنده , , S.N.B. and Chiappini، نويسنده , , A. and Jestin، نويسنده , , Y. and Ferrari، نويسنده , , M. and Moser، نويسنده , , E. and Coppa، نويسنده , , A. and Foglietti، نويسنده , , V. and Huy، نويسنده , , P.T. and Tran Ngoc، نويسنده , , K. and Nunzi Conti، نويسنده , , G. and Pelli، نويسنده , , S. and Righini، نويسنده , , G.C. and Speranza، نويسنده , , G.، نويسنده ,
Abstract :
95.8SiO2–4.2HfO2 planar waveguide activated by 0.2 mol% Er and 0.2 mol% Yb was fabricated by multi-target rf-sputtering technique. The optical parameters were measured by an m-line apparatus operating at 543.5, 632.8, 1319 and 1542 nm. The waveguide compositions were investigated by energy dispersive spectroscopy. The waveguide exhibits a single propagation mode at 1.3 and 1.5 μm with an attenuation coefficient of 0.2 dB/cm at 1.5 μm. The emission of 4I13/2 → 4I15/2 transition of Er3+ ion, with a 42 nm bandwidth was observed upon TE0 mode excitation at 980 and 514.5 nm. Photoluminescence excitation spectroscopy was used to obtain information about the effective excitation efficiency of Er3+ ions by co-doping with Yb3+ ions. Channel waveguide in rib configuration were fabricated by wet etching process in the active film.
Keywords :
Rare-earth in glasses , optical spectroscopy , silicates , Scanning electron microscopy , Planar waveguides , sputtering , infrared properties , Luminescence
