光损耗低的熔融石英块在通信系统的低损耗光波导中有许多潜在用途。它可以用作单一材料纤维的唯一材料,用作有较低折射率包层的纤芯或用作有较高折射率纤芯的包层。可以用各种方法及原材料来制造熔融石英块,但是损耗最低的材料的选择受到纯度考虑的限制,及受到希望维持极低的水份含量的限制,以便在0.95微 Fused silica blocks with low optical loss have many potential uses in low-loss optical waveguides for communication systems. It can be used as the sole material for single material fibers, as a core with a lower index cladding or as a cladding with a higher index core. The fused silica mass can be made in a variety of ways and starting materials, but the choice of materials with the lowest loss is limited by purity considerations and limited by the desire to maintain very low moisture content so that at 0.95 micro