公开(公告)号：JP2000277834A

公开(公告)日：2000-10-06

申请号：JP2000063059

申请日：2000-03-08

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 ,  H04B10/16

Abstract: PROBLEM TO BE SOLVED: To compensate for Raman effect by producing a gain inclined against Raman inclination in advance and applying the inclined gain to the spectrum of optical signals transmitted through an optical fiber. SOLUTION: A gain inclined against Raman inclination in advance is produced and the inclined gain is applied to the spectrum of optical signals transmitted through an optical fiber. For example, when an optical signal is transmitted from the output of an optical amplifier 100-i, e.g. 100-1, the gain is inclined at the low end of spectrum. Then a receiving optical amplifier, for example, an amplifier 100-2 amplifies a received signal and processes it again so that the power level of the optical signal is preliminarily inclined against Raman inclination produced in a transmitted light transmission line. With this constitution Raman effect can be offset.

公开(公告)号：JP2000353841A

公开(公告)日：2000-12-19

申请号：JP2000123009

申请日：2000-04-24

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ACKERMAN DAVID ALAN ,  BERGER MATTHIAS ,  ZHOU JIANHUI

IPC: G02F1/03 ,  H01S3/06 ,  H01S3/10 ,  H01S5/026 ,  H01S5/0687 ,  H04B10/00 ,  H04B10/02 ,  H04B10/04 ,  H04B10/06 ,  H04B10/079 ,  H04B10/08 ,  H04B10/14 ,  H04B10/17 ,  H04B10/29 ,  H04B10/293 ,  H04J14/00 ,  H04J14/02 ,  H04B10/16

Abstract: PROBLEM TO BE SOLVED: To control frequency and output power independently by keeping the sum of the power level of an amplitude adjusted pilot tone signal and the power level of a received WDM optical signal constant independent of the number and amplitude of a wavelength included in the received WDM optical signal. SOLUTION: An input optical signal including a received WDM(wavelength division multiplex) optical signal and an amplitude adjusted optical pilot tone signal having a wavelength located outside the WDM signal is amplified. A wavelength stabilized laser 503 optical signal for use as a pilot tone signal is generated. The power level of a signal to be inputted to an optical amplifier 506 is compared with a reference signal and a control signal is generated. The amplitude of the received pilot signal is adjusted so that the sum of the power level thereof and the power level of the received WDM signal remains constant independent of the number and amplitude of the at least one wavelength included in the received WDM signal.

公开(公告)号：DE60034618T2

公开(公告)日：2008-01-31

申请号：DE60034618

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 ,  H04B10/17 ,  H01S3/06 ,  H01S3/10 ,  H01S3/30 ,  H04B10/02 ,  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：DE60034618D1

公开(公告)日：2007-06-14

申请号：DE60034618

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 ,  H04B10/17 ,  H01S3/06 ,  H01S3/10 ,  H01S3/30 ,  H04B10/02 ,  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：DE60104974D1

公开(公告)日：2004-09-23

申请号：DE60104974

申请日：2001-01-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BERGER MATTHIAS ,  DORSCHKY CLAUS ,  HAUNSTEIN HERBERT ,  KUNZ FRANK ,  SCHULIEN CHRISTOPH ,  STICHT KONRAD

IPC: H03L7/089 ,  H03L7/091 ,  H04L7/033

Abstract: A method for correcting the phase of a clock in a data receiver, using a Hogge or Alexander phase discriminator which receives a data flow representing different signal levels with logical high and low signal values and signal transitions positioned therebetween, wherein the positions of such signal transitions between respective two adjacent logical signal values are evaluated for correcting the phase of the clock. The position of a signal transition between a first pair of signal values on one level (11) and a second pair of signal values on the other level (00) is weighted stronger in the evaluation then the positions of signal transitions between adjacent single values (1,0) of different signal levels.

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：DE60104974T2

公开(公告)日：2005-09-01

申请号：DE60104974

申请日：2001-01-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BERGER MATTHIAS ,  DORSCHKY CLAUS ,  HAUNSTEIN HERBERT ,  KUNZ FRANK ,  SCHULIEN CHRISTOPH ,  STICHT KONRAD

IPC: H03L7/089 ,  H03L7/091 ,  H04L7/033

Abstract: A method for correcting the phase of a clock in a data receiver, using a Hogge or Alexander phase discriminator which receives a data flow representing different signal levels with logical high and low signal values and signal transitions positioned therebetween, wherein the positions of such signal transitions between respective two adjacent logical signal values are evaluated for correcting the phase of the clock. The position of a signal transition between a first pair of signal values on one level (11) and a second pair of signal values on the other level (00) is weighted stronger in the evaluation then the positions of signal transitions between adjacent single values (1,0) of different signal levels.