APPARATUS AND METHODS OF CONTROL FOR COOLANT RECYCLING
    3.
    发明申请
    APPARATUS AND METHODS OF CONTROL FOR COOLANT RECYCLING 审中-公开
    冷却循环控制装置及其控制方法

    公开(公告)号:WO2009142693A1

    公开(公告)日:2009-11-26

    申请号:PCT/US2009/002901

    申请日:2009-05-11

    CPC classification number: C03B37/02718 C03B2205/57 C03C25/12

    Abstract: A system and method for cooling and coating optical fiber includes the capability to control the amount of coolant gas that is fed to and recycled through a heat exchanger for cooling the optical fiber. The capability to control the amount of fed and recycled coolant gas includes measuring at least one parameter selected from the thermal conductivity of the coolant gas, the viscosity of the coolant gas, the diameter of the primary coating on the optical fiber, and the power usage of a coating applicator for applying primary coating on the optical fiber.

    Abstract translation: 用于冷却和涂覆光纤的系统和方法包括控制通过用于冷却光纤的热交换器供给和再循环的冷却剂气体的量的能力。 控制进料和回收的冷却剂气体的量的能力包括测量选自冷却剂气体的导热性,冷却剂气体的粘度,光纤上的初级涂层的直径和功率使用的至少一个参数 用于在光纤上施加初级涂层的涂布施加器。

    METHOD OF MAKING AN OPTICAL FIBER PREFORM
    4.
    发明申请
    METHOD OF MAKING AN OPTICAL FIBER PREFORM 审中-公开
    制造光纤预制件的方法

    公开(公告)号:WO2005066084A1

    公开(公告)日:2005-07-21

    申请号:PCT/US2004/042388

    申请日:2004-12-16

    CPC classification number: C03B37/01211 C03B2201/50 C03B2203/29

    Abstract: A method for manufacturing an alkali metal optical oxide doped glass optical fiber preform and fiber. According to the method, a first glass rod is formed, preferably by an OVD method, with a refractive index delta preferably between 0.2% and 3%. A glass sleeve tube is formed, preferably by an MCVD or PVCD method. The first glass rod is inserted into the sleeve tube and the rod-tube assembly is heated and an alkali metal vapor is flowed between the sleeve tube and the first glass rod. Additional glass may optionally be formed on the inside surface of the sleeve tube prior to inserting the first glass rod and flowing the alkali metal vapor. The additional glass may be up-doped, down-doped ,or both. The sleeve may then be collapsed onto the first glass rod to form a second glass rod doped with an alkali metal oxide. The second glass rod is drawn to form a third glass rod. Additional glass may then be formed on the third glass rod to form an optical fiber preform from which optical fiber may be drawn. Alternatively, the first glass rod is removed from the sleeve tube after flowing the alkali metal vapor and before the collapse step, after which additional glass may be formed on the first glass rod to form an optical fiber preform.

    Abstract translation: 一种制造碱金属光氧化物掺杂玻璃光纤预制棒和纤维的方法。 根据该方法,优选通过OVD方法形成第一玻璃棒,折射率Δ优选在0.2%至3%之间。 优选通过MCVD或PVCD方法形成玻璃套管。 将第一玻璃棒插入套管中,并加热棒管组件,并且在套管与第一玻璃棒之间流过碱金属蒸气。 在插入第一玻璃棒并使碱金属蒸气流动之前,另外的玻璃可任选地形成在套管的内表面上。 附加的玻璃可以是上掺杂的,下掺杂的或两者的。 然后可以将套筒折叠到第一玻璃棒上以形成掺杂有碱金属氧化物的第二玻璃棒。 第二玻璃棒被拉伸以形成第三玻璃棒。 然后可以在第三玻璃棒上形成另外的玻璃,以形成可从中拉出光纤的光纤预成型件。 或者,在使碱金属蒸气流动并在崩溃步骤之前,将第一玻璃棒从套筒管中移除,之后可以在第一玻璃棒上形成另外的玻璃以形成光纤预制件。

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