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用化学气相沉积法熔炼石英棒制造低损耗光导纤维的实验
Authors
潘中浩
Publication date
1 January 1979
Publisher
《光通信研究》编辑部
Doi
Cite
Abstract
<正> 管内化学气相沉积法(MCVD 法)是制造低损耗石英光纤的较好方法。我们最初制造的石英光纤损耗较高,数字孔径较小,后来做了基本试验,得到了质量较好的光纤。熔炼石英棒的设备由玻璃车床、电气控制柜、流量控制柜及气体纯化装置几部分组成(图1)。用图1所示的实验装置,由鼓泡瓶温度与鼓泡流量控制蒸发量,由蒸发量得到相应的掺杂沉积成分构成各沉积层所要求的折射率。选定鼓泡瓶及蒸发温度后怍出各种蒸发原料的蒸发量与流量关系曲线,调整流量就能得到高折射率芯区与低折射率阻挡层的折射率差,从而得到所要求的数字孔径。要提高数字孔径以加大光纤的集光能力必须加大折射
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Last time updated on 26/01/2023