公开(公告)号：EP1108689A3

公开(公告)日：2002-06-19

申请号：EP00310756.2

申请日：2000-12-04

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Monberg, Eric M. ,  Walz, Frederick W., Jr.

IPC: C03B19/12 ,  C03B37/012 ,  C03B37/014 ,  C03B19/14

CPC classification number: C03B37/0146 ,  C03B19/12 ,  C03B37/01205 ,  C03B37/01486

Abstract: The invention involves fabricating a glass tube, e.g., a silica overcladding tube (10), with very little bow, e.g., about 0.3mm per meter or less. In particular, the invention involves securing the tube (10) by a handle (22,40) that both allows the tube to hang plumb during treatment, and also is capable of deforming during such heat treatment to maintain the plumb arrangement. The glass tube is preferably derived from a sol-gel process and is used as an overcladding tube in the manufacture of glass optical fiber preforms by the rod-in-tube process.

Abstract translation: 本发明涉及制造陶瓷管，例如，二氧化硅外包管（10），具有非常小的弓形，例如约0.3mm /米或更小。 特别地，本发明涉及通过手柄（22,40）固定管（10），两者都允许管在处理期间吊起铅垂，并且还能够在这种热处理期间变形以维持铅垂排列。

公开(公告)号：EP1188724A1

公开(公告)日：2002-03-20

申请号：EP01301201.8

申请日：2001-02-12

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Fleming, James William Jr. ,  Kakar, Sandeep ,  Lum, Richard M. ,  Monberg, Eric M.

IPC: C03B37/012

CPC classification number: C03B37/02754 ,  C03B37/01211 ,  C03B37/01225 ,  C03B37/0126 ,  C03B37/01446

Abstract: An improved technique for assembling and drawing fiber from preforms is provided. In one embodiment, the technique involves providing a core rod assembly comprising a core rod and a bushing attached at an end of the assembly. The core rod assembly is inserted into an unsintered overcladding tube, and secured to the tube such that the core rod assembly is suspended within. The overcladding tube and the core rod assembly are heated to sinter the overcladding tube and thereby form a preform assembly. During the heating step, the bushing comes into contact with the interior of the overcladding tube, and, because the bushing has a larger diameter than the core rod, an annular gap is maintained between the core rod assembly and the interior of the overcladding tube. It is then possible to attach a draw handle to the preform assembly, place the preform assembly into a draw tower, and draw fiber from the preform assembly by an overclad during draw technique.

Abstract translation: 提供了一种用于装配和拉伸预型件从纤维的改进技术。 在一个中，实施例的技术涉及提供的芯棒组件，其包括一个芯杆并且在所述组件的一端连接的衬套。 芯棒组件插入未烧结在外包管，和固定到所述管检查做了芯杆组件内暂停。 外包管和芯杆组件被加热以烧结外包管，从而形成预型件组件。 在加热步骤期间，套管进入与外包管的内部接触，而且，由于衬套具有比上环形设计间隙的芯棒保持在芯杆组件和外包管的内部之间的更大的直径。 然后，可以对把手附着到拉丝预制棒组件，所述预成型件组件放置到拉丝塔和拉伸技术中通过在包覆绘制从预制件组件的纤维。

公开(公告)号：EP1108689A2

公开(公告)日：2001-06-20

申请号：EP00310756.2

申请日：2000-12-04

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Monberg, Eric M. ,  Walz, Frederick W., Jr.

IPC: C03B19/12 ,  C03B37/012 ,  C03B37/014

CPC classification number: C03B37/0146 ,  C03B19/12 ,  C03B37/01205 ,  C03B37/01486

Abstract: The invention involves fabricating a ceramic tube, e.g., a silica overcladding tube (10), with very little bow, e.g., about 0.3 mm per meter or less. In particular, the invention involves securing the tube (10) by a handle (22, 40) that both allows the tube to hang plumb during treatment, and also is capable of deforming during such heat treatment to maintain the plumb arrangement.

公开(公告)号：EP1251107A1

公开(公告)日：2002-10-23

申请号：EP02251803.9

申请日：2002-03-13

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： de Hazan, Yoram ,  MacChesney, John B. ,  Monberg, Eric M. ,  Stockert, Thomas E.

IPC: C03B37/014

CPC classification number: C03B37/01446 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2203/22

Abstract: The doped silica core region of a core rod for an optical fiber preform is protected against unwanted fluorine doping during fluorine doping of the outer silica layer by selectively consolidating the core region prior to fluorine doping. Due to dopants in the core region, the soot in the core region consolidates before the soot in the outer undoped region. This inherent property allows the entire core rod to be heated prior to fluorine doping resulting in selective partial consolidation and preventing fluorine doping of the doped center core region. The process time required may be reduced by using incremental fluorine doping. In the incremental doping process the doping step is separated into a deposit step, where "excess" fluorine is deposited on the silica particles, and a drive-in step where atomic fluorine is distributed into the silica particles. The drive-in step is conveniently combined with the sintering or consolidation step to further enhance the efficiency of the doping process.

Abstract translation: 用于光纤预制棒的芯棒的掺杂二氧化硅芯区域通过在氟掺杂之前选择性地固结芯区域来保护外氟化硅层的氟掺杂期间的不需要的氟掺杂。 由于核心区域中的掺杂剂，核心区域中的烟灰在外部未掺杂区域之前的烟灰之前固结。 这种固有性质允许在氟掺杂之前将整个芯棒加热，从而导致选择性部分固结并防止掺杂中心芯区域的氟掺杂。 可以通过使用增量氟掺杂来减少所需的处理时间。 在增量掺杂过程中，掺杂步骤被分离成沉积步骤，其中“过量”氟沉积在二氧化硅颗粒上，以及将原子氟分布到二氧化硅颗粒中的驱入步骤。 驱入步骤方便地与烧结或固化步骤组合以进一步提高掺杂过程的效率。

公开(公告)号：EP1182172A1

公开(公告)日：2002-02-27

申请号：EP01301191.1

申请日：2001-02-12

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Lum, Richard M. ,  Mixon, David A. ,  Monberg, Eric M. ,  Trevor, Dennis J.

IPC: C03B19/12

CPC classification number: C03B19/12 ,  C03B2201/04

Abstract: A process produces a glass overcladding tube from a silica gel body. The process includes passing the gel body through a hot zone under conditions that cause partial sintering of the gel body and repassing the gel body through the hot zone under conditions that further sinter the gel body into a glass overcladding tube. A preform for an optical fibre, comprising core, cladding layer and overcladding tube is also disclosed; the overcladding tube being the sintered, sol-gel produced, silica tube obtainable by the disclosed and claimed process of sintering the silica gel body.

Abstract translation: 的方法，从硅胶体内产生的玻璃外包管。 该方法包括使凝胶体通过的条件下的热区并导致凝胶体的部分烧结，并通过的条件下热区repassing凝胶体凝胶体没有进一步的烧结到玻璃外包管。 一种用于在光纤，其包括芯，包覆层和外包覆管预成型件是由此游离缺失盘; 外包管被制造的烧结，溶胶 - 凝胶，二氧化硅管可获得的游离缺失通过和所要求保护烧结硅胶体的过程中的光盘。

公开(公告)号：EP1114799A1

公开(公告)日：2001-07-11

申请号：EP00306722.0

申请日：2000-08-07

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Mixon, David A. ,  Monberg, Eric M. ,  Trevor, Dennis M.

IPC: C03B19/12 ,  C03B19/14 ,  B01J3/03 ,  C23C16/44 ,  F27D23/00

CPC classification number: F27D5/0068 ,  C03B19/12 ,  C03B19/1453 ,  F27B9/082 ,  F27B9/088 ,  F27D5/0062 ,  F27D7/02

Abstract: The invention provides a process capable of heating sol-gel tubes used in the manufacture of glass optical fibre preforms, or other bodies (11,27) in a manner that both limits the amount of undesirable condensation on cooler surfaces and also promotes heating and treatment with gaseous reactants in a uniform manner. In one embodiment, the process involves the steps of providing a furnace comprising a tubular muffle (10,29) having an opening at one end; placing tubes or other bodies (11,27) into the muffle through the opening; placing within the muffle, just inside the muffle opening, a cylindrical heat and gas shield (12,23), e.g., a plug; sealing the muffle opening with a door (13,20); heating the tubes; and treating the tubes by directing the gases (15,26) through a feed hole (14,21,24,25) located in the door or elsewhere in the muffle. The heat-gas shield controls the amount of heat reaching the door, thereby maintaining the integrity of the o-ring (16) door seal. It is also possible in other embodiments (Fig.2) for the shield to control the extent to which both process gases and condensable materials driven from the tubes are able to back diffuse toward the muffle door, thereby reducing or avoiding condensation of the materials on the door as well as undesirable reactions between the process gases and the o-ring seal of the door.

Abstract translation: 本发明提供了一种能够加热用于制造玻璃光纤预制件或其它主体（11,27）的溶胶 - 凝胶管的方法，其既限制了在较冷的表面上不期望的冷凝量并且还促进了加热和处理 气态反应物以均匀的方式。 在一个实施例中，该方法包括提供包括在一端具有开口的管状马弗管（10,29）的炉子的步骤; 通过开口将管或其他物体（11,27）放入马弗管; 放置在马弗炉内，正好位于马弗炉口内部，一个圆柱形的热气保护罩（12,23），例如一个塞子; 用门（13,20）密封马弗炉口; 加热管; 以及通过将气体（15,26）引导通过位于门中的进料孔（14,21,24,25）或马弗炉中的其他地方来处理管。 热气屏蔽控制到达门的热量，从而保持O形圈（16）门密封的完整性。 在其他实施例（图2）中，屏蔽罩也可以控制从管驱动的工艺气体和可冷凝材料能够朝向马弗炉门的方向扩散的程度，从而减少或避免材料冷凝 门以及工艺气体和门的O形圈密封件之间的不良反应。