公开(公告)号：DE602004001300D1

公开(公告)日：2006-08-03

申请号：DE602004001300

申请日：2004-07-28

Applicant: LUCENT TECHNOLOGIES INC

Inventor： DE LIND VAN WIJNGAARDEN ADRIAA ,  LIU XIANG ,  XIE CHONGJIN

IPC: H04B10/02 ,  H04B10/18 ,  G02B6/27 ,  H04J14/00 ,  H04J14/02

Abstract: A system and method for multi-channel PMD/PDL/PDG mitigation, the system including polarization scramblers adapted to vary the state of polarization of an optical signal propagated through the system to effectively vary the polarization mode dispersion experienced by the signal during each burst-error-correcting-period of the forward error correction used in the system.

公开(公告)号：BRPI0716906A2

公开(公告)日：2013-11-05

申请号：BRPI0716906

申请日：2007-09-20

Applicant: LUCENT TECHNOLOGIES INC

Inventor： LIU XIANG ,  WEI XING

Abstract: A digital version of both amplitude and phase of a received optical is developed by employing direct differential detection in conjunction with digital signal processing. The signal is split into three copies. An intensity profile is conventionally obtained using one of the copies. Phase information is obtained by supplying each remaining copy to a respective one of a pair of optical delay interferometers that have orthogonal phase offsets, followed by respective balanced intensity detectors. The output of each of the balanced intensity detectors, and the intensity profile, are each converted to respective digital representations. Signal processing is used to develop the phase information from the digital representations of the output of the balanced intensity detector outputs.

公开(公告)号：CA2509858C

公开(公告)日：2010-02-16

申请号：CA2509858

申请日：2005-06-13

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GILL DOUGLAS M ,  LIU XIANG

IPC: H04B10/12 ,  H04B10/08 ,  H04B10/155 ,  H04B10/18 ,  H04B10/43

Abstract: A method and apparatus for transmission of optical signals across an optical transmission link wherein duobinary signals or inverse-data signals are transmitted when the chromatic dispersion of the transmission link is above or below a dispersion threshold, respectively, to significantly improve optical signal transmission performance.

公开(公告)号：DE602005000871T2

公开(公告)日：2007-12-20

申请号：DE602005000871

申请日：2005-09-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： FISHMAN DANIEL A ,  LIU XIANG ,  WEI XING ,  YING JINPIN

IPC: H04B10/18 ,  H04J14/02

Abstract: A dispersion compensator apparatus including interleavers for deinterleaving/interleaving even and odd channels of a WDM signal, and dispersion compensation modules (DCMs) coupled between the interleavers. One or more of the DCMs is a periodic-group-delay (PGD) DCMs for providing dispersion compensation.

公开(公告)号：DE60105938T2

公开(公告)日：2006-02-09

申请号：DE60105938

申请日：2001-05-08

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHANDALIA JUHI ,  DI GIOVANNI DAVID JOHN ,  EGGLETON BENJAMIN JOHN ,  KOSINSKI SANDRA GREENBERG ,  LIU XIANG ,  WINDELER ROBERT SCOTT ,  XU CHUNHUI

IPC: G02B6/02 ,  G02B6/14 ,  G02B6/255

公开(公告)号：DE602007006024D1

公开(公告)日：2010-06-02

申请号：DE602007006024

申请日：2007-07-12

Applicant: LUCENT TECHNOLOGIES INC

Inventor： GILES RANDY CLINTON ,  LIU XIANG

IPC: H04B10/155 ,  H04B10/43 ,  H04L27/32

Abstract: Methods and apparatus are described for generating and receiving amplitude and differential-phase encoded signals in which the number of phase states at a given amplitude level is always less than or equal to that at a higher amplitude level and at least two amplitude levels have different numbers of phase states.

公开(公告)号：DE602005002284T2

公开(公告)日：2008-02-14

申请号：DE602005002284

申请日：2005-02-15

Applicant: LUCENT TECHNOLOGIES INC

Inventor： LIU XIANG ,  SU YIKAI ,  WEI XING

IPC: H04B10/00 ,  H04B10/17

公开(公告)号：DE602005000871D1

公开(公告)日：2007-05-24

申请号：DE602005000871

申请日：2005-09-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： FISHMAN DANIEL A ,  LIU XIANG ,  WEI XING ,  YING JINPIN

IPC: H04B10/18 ,  H04J14/02

Abstract: A dispersion compensator apparatus including interleavers for deinterleaving/interleaving even and odd channels of a WDM signal, and dispersion compensation modules (DCMs) coupled between the interleavers. One or more of the DCMs is a periodic-group-delay (PGD) DCMs for providing dispersion compensation.

公开(公告)号：DE60105938D1

公开(公告)日：2004-11-04

申请号：DE60105938

申请日：2001-05-08

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHANDALIA JUHI ,  DI GIOVANNI DAVID JOHN ,  EGGLETON BENJAMIN JOHN ,  KOSINSKI SANDRA GREENBERG ,  LIU XIANG ,  WINDELER ROBERT SCOTT ,  XU CHUNHUI

IPC: G02B6/02 ,  G02B6/14 ,  G02B6/255 ,  G02B6/16

公开(公告)号：MX2009002789A

公开(公告)日：2009-03-30

申请号：MX2009002789

申请日：2007-09-20

Applicant: LUCENT TECHNOLOGIES INC

Inventor： LIU XIANG ,  WEI XING

IPC: H04B10/158

Abstract: Se describe una versión digital de la amplitud y la fase de una señal óptica recibida, que es desarrollada por el empleo de la detección diferencial directa en conjunto con el procesamiento de señales digitales. La señal es dividida en tres copias. Un perfil de intensidad es convencionalmente obtenido utilizando una de las copias. La información de fase es obtenida al suministrar cada copia remanente a uno respectivo de un par de interferómetros de retraso óptico que tienen desplazamientos de fase ortogonal, seguido por los detectores de intensidad balanceada, respectivos. La salida de cada uno de los detectores de intensidad balanceada, y el perfil de intensidad, son cada uno convertido para representaciones digitales respectivas. El procesamiento de señales es utilizado para desarrollar la información de fase a partir de las representaciones digitales de la salida del detector de intensidad balanceada.