Patent ID: 6818577
Filing Date: 2004-11-16
Classification: C03C,G02B

Abstract:
An optical waveguide element comprising a multicomponent glass material formed of Na2Oâ€”B2O3â€”Al2O3â€”SiO2 glass, comprising:SiO2: 60 to 75% by mole, B2O3: 10 to 20% by mole, Al2O3: 2 to 10% by mole, Na2O: 5 to 13% by mole, As2O3: 0 to 0.5% by mole, and Sb2O3: 0 to 0.5% by mole provided that Li2O is greater than 0% and less than 1% by mole, and As2O3+Sb2O3: 0.01 to 1% mole, wherein the multicomponent glass material is doped with Ag ions by ion exchange to form an optical waveguide.