公开(公告)号：US06289698B1

公开(公告)日：2001-09-18

申请号：US08872911

申请日：1997-06-11

申请人： A. Joseph Antos ,  Polly W. Chu

发明人： A. Joseph Antos ,  Polly W. Chu

IPC分类号： C03B37023

CPC分类号： C03C13/045 ,  C03B32/00 ,  C03B37/0124 ,  C03B37/01413 ,  C03B37/01446 ,  C03B37/01466 ,  C03B37/01853 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/36 ,  C03B2203/22 ,  C03C2201/32 ,  G02B6/03611 ,  H01S3/06716 ,  H01S3/0672

摘要： A sintered dense glass, alumina-doped optical fiber preform is stretched and is then heated to a temperature of 1490-1495° C. to remove bubbles without causing crystallization. Thereafter, the stretched glass body is either drawn directly into an optical fiber or overclad and then drawn into a fiber.

摘要翻译： 将烧结致密玻璃，氧化铝掺杂的光纤预制件拉伸，然后加热至1490-1495℃的温度以除去气泡而不引起结晶。 此后，将拉伸的玻璃体直接拉入光纤或外包层中，然后拉成纤维。

公开(公告)号：US06467313B1

公开(公告)日：2002-10-22

申请号：US09590987

申请日：2000-06-09

申请人： Polly W. Chu ,  Lisa A. Moore ,  Michelle D. Pierson-Stull

发明人： Polly W. Chu ,  Lisa A. Moore ,  Michelle D. Pierson-Stull

IPC分类号： C03B37075

CPC分类号： C03B37/0146 ,  C03B37/01446 ,  C03B2201/28 ,  C03B2201/30 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2201/40 ,  C03B2201/42 ,  C03B2201/54 ,  C03C13/046 ,  G02B2006/12038 ,  G02B2006/12166

摘要： The present invention discloses novel methods for fabricating glass articles, particularly optical fiber glass preforms, which may contain alumina, yttrium, lanthanum, erbium, or other rare earth metals as dopants. The glass articles made in accordance with the present invention exhibit radially uniform dopant profiles relative to conventional dopant methods. In addition, the overall concentration of the dopant is increased relative to analogous dopant methods.

摘要翻译： 本发明公开了用于制造玻璃制品，特别是可以含有氧化铝，钇，镧，铒或其它稀土金属作为掺杂剂的光纤玻璃预制件的新方法。 根据本发明制造的玻璃制品相对于常规的掺杂剂方法显示出径向均匀的掺杂剂分布。 此外，相对于类似的掺杂剂方法，掺杂剂的总体浓度增加。

公开(公告)号：US06418757B1

公开(公告)日：2002-07-16

申请号：US09318316

申请日：1999-05-25

申请人： George E. Berkey ,  Polly W. Chu ,  Carl E. Crossland ,  Lisa A. Moore ,  Gang Qi ,  John W. Solosky

发明人： George E. Berkey ,  Polly W. Chu ,  Carl E. Crossland ,  Lisa A. Moore ,  Gang Qi ,  John W. Solosky

IPC分类号： C03B3702

CPC分类号： C03B37/0124 ,  C03B2201/31 ,  C03B2201/32

摘要： A method of making a glass article such as an optical waveguide preform is disclosed. The method comprises drawing a rod in at least two steps. In the first step an elongated, consolidated preform having an aperture therethrough is drawn to a reduced diameter preform. The second step involves drawing the reduced diameter preform into a rod, preferably at a lower temperature than the first step. The method substantially reduces the formation of inclusions in the glass article during drawing.

摘要翻译： 公开了制造玻璃制品如光波导预制件的方法。 该方法包括在至少两个步骤中拉杆。 在第一步骤中，将具有穿过其中的孔的细长的，固结的预成型件拉制成直径缩径的预制件。 第二步涉及将直径缩小的预成型件拉制成棒，优选地在比第一步骤低的温度下。 该方法基本上减少拉制过程中玻璃制品中夹杂物的形成。

公开(公告)号：US06621624B2

公开(公告)日：2003-09-16

申请号：US10044027

申请日：2002-01-10

申请人： Polly W. Chu ,  Adam J. G. Ellison ,  Douglas E. Goforth ,  Daniel W. Hawtof ,  Joseph M. Whalen

发明人： Polly W. Chu ,  Adam J. G. Ellison ,  Douglas E. Goforth ,  Daniel W. Hawtof ,  Joseph M. Whalen

IPC分类号： H01S300

CPC分类号： C03C3/06 ,  C03C3/083 ,  H01S3/06716 ,  H01S3/06754 ,  H01S3/1601 ,  H01S2301/04

摘要： Disclosed are optical gain fibers which include an erbium-containing core and a cladding surrounding the core and which have ripple of less than about 25% over about a 40 nm wide window or ripple of less than about 15% over about a 32 nm wide window, or both. In one embodiment, the optical gain fibers are pumpable at 980 nm and at 1480 nm. In another embodiment, the optical gain fibers are fusion sliceable. In yet another embodiment, the core includes oxides erbium; the cladding includes silicon dioxide; and the optical gain fiber has a passive loss of less than about 0.5% of the peak absorption of the erbium absorption band in the vicinity of 1530 nm. The optical gain fibers of the present invention have a wider gain window, improved flatness across the gain window, and/or increased gain as compared to conventional optical gain fibers. Accordingly, they are useful in amplifying optical signals, particularly signals which need to be repeatedly amplified over the course of a long-haul transmission, without losses in the signal quality that are commonly encountered in conventional optical signal amplifying methods.