公开(公告)号：DE69705580T2

公开(公告)日：2002-06-06

申请号：DE69705580

申请日：1997-04-08

Applicant: LUCENT TECHNOLOGIES INC

Inventor： DIGIOVANNI DAVID JOHN ,  WOMACK KIM WILLARD ,  PARK NAMKYOO ,  WYSOCKI PAUL FRANCIS

IPC: H01S3/07 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H01S3/16 ,  H01S3/23

Abstract: Multistage Er-doped fiber amplifiers (EDFAs) (60) are disclosed. They comprise a first stage (63) that comprises Er and Al, and further comprise a second stage (67) that comprises Er and a further rare earth element, exemplary Yb. Such multistage EDFAs can have advantageous characteristics e.g., a relatively wide flat gain region (e.g. 1544-1562 nm), and relatively high output power, without significant degradation of the noise figure. Exemplary, the amplifiers are used in WDM systems and in analog CATV systems (110).

公开(公告)号：DE69705580D1

公开(公告)日：2001-08-16

申请号：DE69705580

申请日：1997-04-08

Applicant: LUCENT TECHNOLOGIES INC

Inventor： DIGIOVANNI DAVID JOHN ,  WOMACK KIM WILLARD ,  PARK NAMKYOO ,  WYSOCKI PAUL FRANCIS

IPC: H01S3/07 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H01S3/16 ,  H01S3/23

Abstract: Multistage Er-doped fiber amplifiers (EDFAs) (60) are disclosed. They comprise a first stage (63) that comprises Er and Al, and further comprise a second stage (67) that comprises Er and a further rare earth element, exemplary Yb. Such multistage EDFAs can have advantageous characteristics e.g., a relatively wide flat gain region (e.g. 1544-1562 nm), and relatively high output power, without significant degradation of the noise figure. Exemplary, the amplifiers are used in WDM systems and in analog CATV systems (110).

公开(公告)号：EP0803944A3

公开(公告)日：1998-09-02

申请号：EP97302411

申请日：1997-04-08

Applicant: LUCENT TECHNOLOGIES INC

Inventor： DIGIOVANNI DAVID JOHN ,  WOMACK KIM WILLARD ,  PARK NAMKYOO ,  WYSOCKI PAUL FRANCIS

IPC: H01S3/07 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H01S3/16 ,  H01S3/23

CPC classification number: H01S3/06758 ,  H01S3/1608 ,  H01S3/1618 ,  H01S2301/04

Abstract: Multistage Er-doped fiber amplifiers (EDFAs) (60) are disclosed. They comprise a first stage (63) that comprises Er and Al, and further comprise a second stage (67) that comprises Er and a further rare earth element, exemplary Yb. Such multistage EDFAs can have advantageous characteristics e.g., a relatively wide flat gain region (e.g. 1544-1562 nm), and relatively high output power, without significant degradation of the noise figure. Exemplary, the amplifiers are used in WDM systems and in analog CATV systems (110).