公开(公告)号：US20110023551A1

公开(公告)日：2011-02-03

申请号：US12902316

申请日：2010-10-12

Applicant: Eric L. Barish ,  Joseph P. Fletcher, III ,  Fengqing Wu

Inventor： Eric L. Barish ,  Joseph P. Fletcher, III ,  Fengqing Wu

IPC: C03B37/15 ,  C03B37/16

CPC classification number: C03B37/01211 ,  C03B37/01245 ,  C03B37/014

Abstract: Core rod sections useable for production of finished optical fiber preforms are fabricated by inserting one or more core body pieces axially end-to-end inside a glass cylinder, thereby defining joints between adjacent ones of the inserted pieces. The cylinder is mounted with the contained core body pieces in the region of a furnace. The glass cylinder and core body pieces are heated together in the furnace, thereby elongating the cylinder and the core body pieces contained in the cylinder, and the cylinder collapses to form a finished core rod. Core rod sections are cut from the finished core rod at positions that coincide with the joints between the core body pieces. One or more of the cut core rod sections are useable for the production of optical fiber preforms.

Abstract translation: 用于生产成品光纤预制棒的芯棒部分通过将一个或多个芯体件沿轴向端对端插入玻璃圆筒内而制成，从而限定相邻插入件之间的接合部。 气缸在炉的区域中安装有包含的芯体件。 玻璃圆筒和芯体片在炉中一起加热，从而使容纳在圆筒中的圆筒和芯体片伸长，并使圆筒塌缩，形成成品芯棒。 在与核心体部件之间的接合部重合的位置处，从完成的芯棒切割出芯棒部分。 一个或多个切割芯棒部分可用于生产光纤预制棒。

公开(公告)号：US20070204657A1

公开(公告)日：2007-09-06

申请号：US11366361

申请日：2006-03-02

Applicant: Eric Barish ,  Robert Lingle ,  David Peckham ,  Fengqing Wu

Inventor： Eric Barish ,  Robert Lingle ,  David Peckham ,  Fengqing Wu

IPC: G02B6/02 ,  C03B37/028 ,  C03B37/018

CPC classification number: C03B37/01211 ,  C03B37/014 ,  C03B2201/12 ,  C03B2201/31 ,  C03C3/04 ,  C03C13/04 ,  G02B6/03627 ,  G02B6/03644 ,  G02B6/03677 ,  G02B6/03694

Abstract: Described herein is a method for making a depressed index cladding for the inner cladding of an optical fiber. The method involves making the depressed index cladding in two steps. The innermost portion of the inner cladding is produced using a soot method, thereby deriving the advantages of the soot method for the region of the cladding that carries the most optical power, then forming the remaining portion of the inner cladding layer using a rod-in-tube step. This method effectively marries the advantages and disadvantages of both methods.

Abstract translation: 这里描述了一种用于制造用于光纤的内包层的凹陷折射率包层的方法。 该方法包括使凹陷的折射率包层分两步进行。 使用烟灰法制造内包层的最内部，从而得到具有最大光焦度的包层的区域的烟灰法的优点，然后使用棒入法形成内包层的剩余部分 立方步。 这种方法有效地结合了两种方法的优缺点。

公开(公告)号：US07021083B2

公开(公告)日：2006-04-04

申请号：US10353354

申请日：2003-01-29

Applicant: Thomas E. McDonald ,  Fengqing Wu

Inventor： Thomas E. McDonald ,  Fengqing Wu

IPC: C03B37/018

CPC classification number: C03B37/01413 ,  C03B19/1415 ,  C03B37/01205 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2207/50 ,  C03B2207/70

Abstract: A glass tube for use in an optical fiber preform is produced by applying a first soot on an end face of a starting member to form an elongated, porous cylindrical soot core having a first density, and applying a second soot including SiO2 on the periphery of the soot core to form a porous soot cladding having a second density greater than that of the soot core at the periphery of the core. The core and the cladding are later heated together at a temperature sufficient for sintering to form a core glass and a cladding glass. Because the soot core collapses at a greater rate than the soot cladding during sintering, the core glass separates or delaminates radially from the cladding glass. The core glass is then removed from the surrounding cladding glass, and the latter is treated to provide a high purity glass tube suitable for use as part of an optical fiber preform.

Abstract translation: 通过在起始构件的端面上施加第一烟炱以形成具有第一密度的细长多孔圆筒形烟炱芯，并且施加包括SiO 2的第二烟炱，制造用于光纤预制棒的玻璃管 在烟灰芯的周边上形成多孔烟灰包层，其具有大于核心周边处的烟灰芯的第二密度的第二密度。 芯和包层随后在足以烧结的温度下一起加热以形成芯玻璃和包层玻璃。 因为烟炱芯在烧结期间以比烟灰覆层更大的速率塌缩，所以芯玻璃与包层玻璃的径向分离或分层。 然后将核心玻璃从周围的包层玻璃中除去，并且将后者处理以提供适合用作光纤预制件的一部分的高纯度玻璃管。

公开(公告)号：US06928841B2

公开(公告)日：2005-08-16

申请号：US10142689

申请日：2002-05-10

Applicant: Fengqing Wu

Inventor： Fengqing Wu

IPC: C03B37/014 ,  C03B37/018 ,  C03C15/00

CPC classification number: C03B37/0146 ,  C03B37/01446 ,  C03B2201/04 ,  C03B2201/075 ,  C03B2201/32

Abstract: The specification describes a VAD method for producing optical fiber preforms by depositing soot onto a solid core rod. The solid core rod preferably has a uniform composition, doped or undoped, suitable for the center core region of the preform. The primary cladding layer, and additional cladding layers if desired, are produced by depositing soot on the center core rod. The surface of the center core rod is treated with an etchant torch that traverses the center core rod in front of the soot deposition torch. This produces a clean interface between the core and primary cladding. This soot-on-center-core-rod method allows the production of sharp index profiles by reducing the diffusion of dopants into and out of the center core portion of the preform that occurs in soot-on-soot processes.

Abstract translation: 该说明书描述了通过将烟灰沉积在实心芯棒上来生产光纤预制棒的VAD方法。 固体芯棒优选具有适合于预成型件的中心芯区域的均匀组成，掺杂或未掺杂。 如果需要，初级包层和附加的包覆层是通过在中心芯棒上沉积烟灰而产生的。 中心芯棒的表面用在烟灰沉积火炬前面穿过中心芯棒的蚀刻炬进行处理。 这在芯和初级包层之间产生干净的界面。 这种烟灰中心芯棒方法允许通过减少掺杂剂进入和吹出在烟灰过程中发生的预制棒的中心芯部分的扩散而产生尖锐的折射率分布。

公开(公告)号：US06904218B2

公开(公告)日：2005-06-07

申请号：US10435855

申请日：2003-05-12

Applicant: Yi Sun ,  David W. Peckham ,  Fengqing Wu

Inventor： Yi Sun ,  David W. Peckham ,  Fengqing Wu

IPC: G02B6/02 ,  G02B6/036 ,  G02B6/22

CPC classification number: G02B6/03666 ,  G02B6/02014 ,  G02B6/02019 ,  G02B6/02266 ,  G02B6/0228 ,  G02B6/0281 ,  G02B6/03611 ,  G02B6/03627 ,  G02B6/0365

Abstract: A super-large-effective-area (SLA) optical fiber that is suitable for communicating over a wide wavelength range and that, because of its large effective area, suppresses nonlinear effects that typically result from interaction between signal channels. The effective area, Aeff, of the SLA fiber of the present invention preferably is equal to or greater than approximately 80 μm2 at a wavelength window around 1310 nm. The cutoff wavelength of the SLA fiber of the present invention preferably is less than 1310 nm. Thus, the SLA fiber of the present invention has a very large effective area and a very low cutoff wavelength. In accordance with the present invention, a variety of SLA fibers are provided that all have very large effective areas and desirable transmission properties. The large effective areas of the SLA fibers of the present invention enable nonlinear effects to be suppressed, as well as Stimulated Brillouin Scattering in analog transmission. The large effective areas also enable attenuation to be reduced. The result of suppressing nonlinear effects and reducing attenuation enable signals to be transmitted over long distances and over a broad bandwidth.

Abstract translation: 适用于在宽波长范围内进行通信的超大型有效面积（SLA）光纤，并且由于其大的有效面积而抑制通常由信号通道之间的相互作用引起的非线性效应。 本发明的SLA纤维的有效面积优选在约1310nm的波长窗口处等于或大于约80μm2。 本发明的SLA纤维的截止波长优选小于1310nm。 因此，本发明的SLA纤维具有非常大的有效面积和非常低的截止波长。 根据本发明，提供了各种SLA纤维，其都具有非常大的有效面积和期望的透射性质。 本发明的SLA纤维的大的有效面积使得能够抑制非线性效应以及模拟传输中的受激布里渊散射。 大的有效面积也可以减少衰减。 抑制非线性效应和减少衰减的结果使信号能够在长距离和宽带宽上传输。