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GLASS POROUS BODY FOR MANUFACTURING OPTICAL FIBER, ITS MANUFACTURING METHOD, OPTICAL FIBER PREFORM, ITS MANUFACTURING METHOD, METHOD FOR CERTIFYING DEHYDRATION OF OPTICAL FIBER PREFORM, AND METHOD FOR MANUFACTURING OPTICAL FIBER
GLASS POROUS BODY FOR MANUFACTURING OPTICAL FIBER, ITS MANUFACTURING METHOD, OPTICAL FIBER PREFORM, ITS MANUFACTURING METHOD, METHOD FOR CERTIFYING DEHYDRATION OF OPTICAL FIBER PREFORM, AND METHOD FOR MANUFACTURING OPTICAL FIBER
PROBLEM TO BE SOLVED: To provide: a glass porous body for manufacturing an optical fiber, with which the dehydration state of a preform can be surely certified in a short time without breaking the preform; a method for manufacturing the same; an optical fiber preform; a method for manufacturing the same; a method for certifying the dehydration of the optical fiber preform; and a method for manufacturing the optical fiber.;SOLUTION: The glass porous body for manufacturing the optical fiber is characterized in that it has a deposited layer, formed by the deposition of glass fine particles formed by a vapor phase method and having a bulk density of 1.4 g/cm3, and a marker layer, formed of glass fine particles having the same composition within a thickness range of 10 mm and having bulk density varied by at least 0.4 g/cm3 in the bulk density distribution in the thickness direction, exists at least one part in the deposited layer.;COPYRIGHT: (C)2007,JPO&INPIT
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机译:解决的问题:提供一种用于制造光纤的玻璃多孔体,利用该玻璃多孔体能够在短时间内可靠地确认预成型坯的脱水状态而不会破坏预成型坯;一种制造方法;光纤预制棒;一种制造方法;证明光纤预制棒脱水的方法;解决方案:用于制造光纤的玻璃多孔体的特征在于,其具有沉积层,该沉积层通过气相法形成的玻璃细颗粒的沉积而形成并且具有堆积密度。厚度为1.4 g / cm 3 Sup>,标记层由具有相同组成的玻璃细颗粒形成,厚度在10 mm范围内,堆积密度变化至少0.4 g / cm 沿厚度方向的体积密度分布中的3 Sup>在沉积层中至少存在一部分。;版权所有:(C)2007,JPO&INPIT
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