公开(公告)号：US5213599A

公开(公告)日：1993-05-25

申请号：US838386

申请日：1992-02-19

Applicant: Robert E. M. Geertman ,  Gerrit Verspui ,  Johannes A. G. P. Damsteegt

Inventor： Robert E. M. Geertman ,  Gerrit Verspui ,  Johannes A. G. P. Damsteegt

IPC: C03B17/04 ,  C03C15/00 ,  C03C17/00 ,  C03C17/245

CPC classification number: C03C17/245 ,  C03B17/04 ,  C03C15/00 ,  C03C17/004 ,  Y10S65/04

Abstract: In the manufacture of tube glass, in which following the drawing of a tube from molten glass the inside surface of the tube is treated with a chemically reactive gas or gas mixture, a gas or gas mixture which is not reactive at the drawing temperature of the glass is dispensed into the tube in the direction of drawing. At a location in the tube where the tube has cooled down so far that the diameter is constant, the gas or gas mixture is made to react by means of a plasma which is generated in the tube.

公开(公告)号：US5992181A

公开(公告)日：1999-11-30

申请号：US31330

申请日：1998-02-26

Applicant: Robert E. M. Geertman

Inventor： Robert E. M. Geertman

IPC: G02B6/02 ,  C03B37/027 ,  C03B37/10 ,  C03B37/12 ,  C03C25/00 ,  C03C25/12 ,  C03C25/62 ,  C03B37/018

CPC classification number: G02B6/02147 ,  C03B37/027 ,  C03C25/12 ,  C03C25/6226 ,  C03C25/6233 ,  C03B2203/18 ,  C03B2203/36 ,  C03B2205/20 ,  G02B2006/02157 ,  G02B6/02085 ,  G02B6/021 ,  G02B6/02109 ,  G02B6/02285

Abstract: A method of manufacturing an optical fiber having a core portion doped with a dopant and a surrounding optical cladding portion is disclosed. The method comprises the steps of drawing a fiber from a molten extremity of a silica preform and moving the fiber along towards a device for coating it with a protective sheath. Prior to the coating step, the moving fiber is irradiated with irregularly modulated actinic radiation, thereby causing corresponding irregular variations in the refractive index of its core portion as a function of longitudinal position. The resulting fiber demonstrates a significantly reduced polarisation mode dispersion.

Abstract translation: 公开了一种制造具有掺杂有掺杂物的核心部分和周围的光学包层部分的光纤的方法。 该方法包括以下步骤：从二氧化硅预制件的熔融末端拉出纤维，并将纤维沿着用于用保护套涂覆的装置移动。 在涂布步骤之前，用不规则调制的光化辐射照射移动的光纤，从而导致其芯部分的折射率相应的不规则变化作为纵向位置的函数。 所得纤维表现出显着降低的偏振模色散。

公开(公告)号：US6148131A

公开(公告)日：2000-11-14

申请号：US183483

申请日：1998-10-30

Applicant: Robert E. M. Geertman

Inventor： Robert E. M. Geertman

IPC: G02B6/02 ,  C03B37/027 ,  C03B37/03 ,  G02B6/00 ,  G02B6/17

CPC classification number: G02B6/02285 ,  C03B37/02745 ,  C03B37/032 ,  C03B2203/06 ,  C03B2203/20 ,  C03B2203/36 ,  C03B2205/06 ,  G02B6/03622

Abstract: A method of manufacturing an optical fiber, whereby a fiber is drawn from a molten extremity of a preform and is subsequently subjected to a torque, thereby causing a portion of the fiber to be twisted about its longitudinal axis and to be endowed with a spin. The torque is applied by running the fiber between a pair of wheels which rotate in mutually opposite senses about two different rotational axes, each wheel having a peripheral curved surface, the wheels being thus arranged that the fiber runs substantially tangential to their curved surfaces and is pressed therebetween, the wheels being moved back and forth relative to one another in a direction substantially perpendicular to the fiber so as to cause the fiber to be rolled back and forth between their curved surfaces.

Abstract translation: 一种制造光纤的方法，由此纤维从预成型件的熔融末端拉出，并随后受到扭矩，从而使纤维的一部分围绕其纵向轴线扭转并且被旋转赋予。 扭矩通过将纤维运行在一对轮子之间，所述一对轮子以相互反向的感测旋转两个不同的旋转轴线，每个车轮具有外围弯曲表面，因此轮子布置成使得纤维基本上与其弯曲表面相切地延伸，并且是 按压它们，轮子在基本上垂直于纤维的方向上相对于彼此前后移动，以使纤维在它们的曲面之间来回滚动。