公开(公告)号：US5087108A

公开(公告)日：1992-02-11

申请号：US553246

申请日：1990-07-13

申请人： Giorgio Grasso ,  Paul L. Scrivener ,  Andrew P. Appleyard

发明人： Giorgio Grasso ,  Paul L. Scrivener ,  Andrew P. Appleyard

IPC分类号： G02B6/02 ,  G02B6/00 ,  G02B6/28 ,  G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/094 ,  H01S3/10 ,  H01S3/17 ,  H04B10/00 ,  H04B10/06 ,  H04B10/12 ,  H04B10/16

CPC分类号： H01S3/06708 ,  H01S3/06754 ,  G02B2006/2839 ,  H01S2301/04 ,  H01S3/06729 ,  H01S3/06737

摘要： The invention relates to an optical amplifier, in particular for optical fiber telecommunication lines (1), operating with a transmission signal in a predetermined wavelength range, which amplifier comprises a fluorescent active optical fiber (6) doped with erbium, having two cores (11 and 12, 101 and 102), one (11, 101) of which is connected to a fiber (4) in which a transmission signal to be amplified and a luminous pumping energy are multiplexed, and to an outgoing fiber adapted to transmit the amplified signal, whereas the second core (12, 102) is optically coupled to the first core and is capable of absorbing the spontaneous erbium emission which would constitute a noise source, allowing a signal to be amplified in a wavelength range substantially corresponding to the tolerance range of the commercially available signal laser emitters.