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发明公开
CN104583140A 氘处理光纤的制造方法和氘处理光纤 无效 - 撤回

氘处理光纤的制造方法和氘处理光纤
摘要：
本发明提供了：一种具有优异的耐氢性的碱金属元素添加芯光纤；以及能够制造这种碱金属元素添加芯光纤的方法。本发明提供了一种制造本发明的氘处理光纤的方法，该方法通过如下步骤制造碱金属元素添加芯光纤，所述步骤包括：母材形成步骤，其中形成了石英玻璃系光纤母材，其具有添加了碱金属元素的芯；光纤拉伸步骤，其中通过对光纤母材进行拉伸从而形成光纤；以及暴露步骤，其中将光纤暴露于氘气氛中。在暴露步骤中，在(氘气分压)×(暴露时间)的值为50kPa·小时以上的条件下，将所述光纤暴露于温度为20℃以上的氘气氛中。
摘要（英）：

Provided are: an alkali metal element-added core optical fiber which has excellent hydrogen resistance characteristics; and a method which enables the production of this alkali metal element-added core optical fiber. A method for producing a deuterium-treated optical fiber of the present invention produces an alkali metal element-added core optical fiber by comprising: a preform formation step wherein a quartz glass-based optical fiber preform having a core to which an alkali metal element is added is formed; a fiber drawing step wherein an optical fiber is formed by fiber-drawing the optical fiber preform; and an exposure step wherein the optical fiber is exposed to a deuterium gas atmosphere. In the exposure step, the optical fiber is exposed to a deuterium gas atmosphere at a temperature of 20 DEG C or more under such a condition that the value of (deuterium gas partial pressure) * (exposure time) is 50 kPa.hour or more.

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