公开(公告)号：DE69828658D1

公开(公告)日：2005-02-24

申请号：DE69828658

申请日：1998-02-03

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SRIVASTAVA ATUL KUMAR ,  SULHOFF JAMES W ,  SUN YAN ,  ZHOU JIANHUI ,  ZYSKIND JOHN LEHRER

IPC: H01S3/10 ,  H01S3/06 ,  H01S3/094 ,  H04B10/17 ,  H04B10/29 ,  H04J14/00 ,  H04J14/02

公开(公告)号：CA2299143C

公开(公告)日：2003-05-27

申请号：CA2299143

申请日：2000-02-23

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SHEHADEH FATIMAH ,  ZHOU JIANHUI ,  BERGER MATTHIAS ,  RAABE CHRISTIAN ,  LIVESCU GABRIELA ,  ZIRNGIBL MARTIN ,  BODE DIRK ,  FISHMAN DANIEL A

IPC: G02F1/35 ,  H01S3/06 ,  H01S3/10 ,  H01S3/30 ,  H04B10/02 ,  H04B10/17 ,  H04B10/18 ,  H04B10/29 ,  H04J14/00 ,  H04J14/02 ,  H04B10/16

Abstract: An optical amplifier is adapted to cancel the Raman gain of an optical transmission path that degrades those optical signals occupying the low end of the bandwidth such that the power is transferred from the latter signals to the optical signals occupying the high end of the bandwidth. More specifically, the optical amplifier adjusts the gain that it applies to the optical signals so that it favors the signal components at the low end of the bandwidth.

公开(公告)号：AU1951900A

公开(公告)日：2000-09-14

申请号：AU1951900

申请日：2000-02-28

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BERGER MATTHIAS ,  BODE DIRK ,  FISHMAN DANIEL A ,  LIVESCU GABRIELA ,  RAABE CHRISTIAN ,  SHEHADEH FATIMAH ,  ZHOU JIANHUI ,  ZIRNGIBL MARTIN

IPC: G02F1/35 ,  H01S3/06 ,  H01S3/10 ,  H01S3/30 ,  H04B10/02 ,  H04B10/17 ,  H04B10/18 ,  H04B10/29 ,  H04J14/00 ,  H04J14/02

Abstract: An optical amplifier is adapted to cancel the Raman gain of an optical transmission path that degrades those optical signals occupying the low end of the bandwidth such that the power is transferred from the latter signals to the optical signals occupying the high end of the bandwidth. More specifically, the optical amplifier adjusts the gain that it applies to the optical signals so that it favors the signal components at the low end of the bandwidth.

公开(公告)号：CA2299143A1

公开(公告)日：2000-09-08

申请号：CA2299143

申请日：2000-02-23

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BERGER MATTHIAS ,  BODE DIRK ,  LIVESCU GABRIELA ,  RAABE CHRISTIAN ,  ZIRNGIBL MARTIN ,  ZHOU JIANHUI ,  SHEHADEH FATIMAH ,  FISHMAN DANIEL A

IPC: G02F1/35 ,  H01S3/06 ,  H01S3/10 ,  H01S3/30 ,  H04B10/02 ,  H04B10/17 ,  H04B10/18 ,  H04B10/29 ,  H04J14/00 ,  H04J14/02 ,  H04B10/16

Abstract: An optical amplifier is adapted to cancel the Raman gain of an optical transmission path that degrades those optical signals occupying the low end of the bandwidth such that the power is transferred from the latter signals to the optical signals occupying the high end of the bandwidth. More specifically, the optical amplifier adjusts the gain that it applies to the optical signals so that it favors the signal components at the low end of the bandwidth.

公开(公告)号：CA2254544A1

公开(公告)日：1999-07-27

申请号：CA2254544

申请日：1998-11-26

Applicant: LUCENT TECHNOLOGIES INC

Inventor： TEICHMANN BERND ,  ZHOU JIANHUI ,  BODE DIRK

IPC: H04J14/00 ,  H04B10/07 ,  H04B10/29 ,  H04B10/294 ,  H04J14/02 ,  H04B10/17

Abstract: The present invention relates generally to the field of optical transmission and particularly to a method and a system for controlling optical amplification in wavelength division multiplex optical transmission. WDM systems currently under development will have eighty or more channels i. e. modulated optical signals with different wavelengths (known as Dense Wavelength Division Multiplexing DWDM). These DWDM systems are demanding optical amplifiers which especially considering the cascadation of a plurality of optica l amplifiers along the transmission path of the DWDM system have only very limited tolerances in certain parameters. Among these parameters gain flatness and gain tilt are of special importance. The present invention discloses a method and a system which make use of auxiliar y optical signals having a given power level which is equal for all auxiliary sign als. Differences in the power levels of the auxiliary signals after optical amplifica tion are used for the control of the optical amplifiers of the WDM system.