| 摘要 |
A fiber optical attenuation set consists of a glass fiber with a core of sodium-barium-borosilicate and a cladding of sodium borosilicate with an addition of aluminium oxide. For achieving desired attenuation/unit length of the fiber, both the core and the cladding contain a pigmenting oxide, e.g. uran trioxide U3O8. Furthermore, the cladding glass contains a substantially smaller addition of another pigmenting oxide, e.g. copper oxide CuO. |
