公开(公告)号：US06636347B1

公开(公告)日：2003-10-21

申请号：US09709089

申请日：2000-11-08

申请人： Ji Wang ,  Gang Qi ,  Carlton M. Truesdale ,  Douglas E. Goforth ,  John D. Minelly ,  Jeffrey T. Kohli ,  Michael Thomas Murtagh

发明人： Ji Wang ,  Gang Qi ,  Carlton M. Truesdale ,  Douglas E. Goforth ,  John D. Minelly ,  Jeffrey T. Kohli ,  Michael Thomas Murtagh

IPC分类号： H04B1012

CPC分类号： C03C3/097 ,  C03C13/046 ,  C03C2201/28 ,  C03C2201/3476 ,  H01S3/1608 ,  H01S3/175 ,  H01S3/176

摘要： An optically active phosporus-silicate glass when pumped to directly excite Er ions, provides gain in 1565 nm to 1620 nm range and comprises in weight percent: SiO2 50 to 92%; Er2O3 0.01 to 2%; P2O5 greater than 5%; and Al2O3 0.0 to 0.3%.

摘要翻译： 当泵浦直接激发Er离子时，光学活性硅 - 硅酸盐玻璃在1565nm至1620nm范围内提供增益，其重量百分比包括：SiO 2 50至92％; Er 2 O 3 0.01至2％; P 2 O 5大于5％ 和Al2O3 0.0〜0.3％。

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.