摘要:
An optical waveguide having a high purity fused silica cladding layer, and a core of high plurality fused silica doped with a sufficient amount of a multivalent metal oxide so as to increase the index of refraction of the core above that of the cladding layer.
摘要:
An optical waveguide having a cladding layer formed of high purity glass and a core of high purity germania containing glass having an index of refraction above that of the cladding layer, said high purity germania containing glass having a cation impurity level not exceeding 10 parts per million of transition elements and a germania content in excess of 15 percent by weight.