Producing method of preform, optical fiber added with rare earth element and optical fiber amplifier
    8.
    发明专利
    Producing method of preform, optical fiber added with rare earth element and optical fiber amplifier 有权
    制造预制件的方法,添加有稀土元素和光纤放大器的光纤

    公开(公告)号:JP2009167048A

    公开(公告)日:2009-07-30

    申请号:JP2008006065

    申请日:2008-01-15

    Abstract: PROBLEM TO BE SOLVED: To provide a producing method and the like of a preform where the preform to produce an optical fiber added with a rare earth element and a P element can be produced stably and efficiently. SOLUTION: The producing method of the preform comprises a first step to deposit glass containing P 2 O 5 on the inside wall of a quartz pipe and a second step to deposit glass containing the rare earth element and not containing P 2 O 5 on the inside wall of the quartz pipe. The preform added with the rare earth element at a core part is produced by performing the first step and the second step alternately and repeatedly. In the producing method of the preform, it is favorable that the rare earth element is an Er element, an F element is added in the quartz pipe, the quartz pipe is heated to 1,500°C or lower in the first step and the quartz pipe is heated to 1,800°C or higher in the second step. COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题:为了提供预制件的制造方法等,可以稳定有效地制造预成型体,以制造添加有稀土元素和P元素的光纤。 解决方案:预型件的制造方法包括在石英管的内壁上沉积含有P O 5 的玻璃的第一步骤,并将第二步骤 在石英管的内壁上含有稀土元素并且不含P O 5 的玻璃沉积玻璃。 在核心部分添加有稀土元素的预成型件通过交替地重复地进行第一步骤和第二步骤来制造。 在预制棒的制造方法中,优选稀土元素为Er元素,在石英管中添加F元素,在第一工序中将石英管加热至1500℃以下,将石英管 在第二步骤中被加热至1,800℃或更高。 版权所有(C)2009,JPO&INPIT

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