公开(公告)号：WO2005004358A1

公开(公告)日：2005-01-13

申请号：PCT/IL2004/000594

申请日：2004-07-04

Applicant: TERASEA LTD. ,  CASPI, Motti ,  DADON, Roni ,  ROIF, Efraim

Inventor： CASPI, Motti ,  DADON, Roni ,  ROIF, Efraim

IPC: H04B10/155

CPC classification number: H03M5/04 ,  G02F1/225 ,  G02F2201/126 ,  H04B10/5055 ,  H04B10/5167 ,  H04L25/497

Abstract: There is provided an optical duobinary (ODB) transmission system, including a duobinary precoder receiving data signals and converting the signals into first and second different digital signals each composed of two level voltages; a duobinary encoder fed by the precoder for converting the digital signals into three level analog signals, and a close loop control circuit for maintaining equal drive voltages for driving a Mach Zehnder Modulator (MZM). A method of encoding NRZ data for optical duobinary (ODB) transmission is also provided.

Abstract translation: 提供了一种光双二进制（ODB）传输系统，其包括接收数据信号并将信号转换成各自由两个电平电压组成的第一和第二不同数字信号的双二进制预编码器; 由预编码器馈送的用于将数字信号转换为三电平模拟信号的双二进制编码器，以及用于保持用于驱动马赫曾德尔调制器（MZM）的相等驱动电压的闭环控制电路。 还提供了用于光学双二进制（ODB）传输的NRZ数据的编码方法。

公开(公告)号：WO2005004358B1

公开(公告)日：2005-03-24

申请号：PCT/IL2004000594

申请日：2004-07-04

Applicant: TERASEA LTD ,  CASPI MOTTI ,  DADON RONI ,  ROIF EFRAIM

Inventor： CASPI MOTTI ,  DADON RONI ,  ROIF EFRAIM

IPC: G02F1/225 ,  H03M5/04 ,  H04B10/50 ,  H04B10/516 ,  H04L25/497 ,  H04B10/155

CPC classification number: H03M5/04 ,  G02F1/225 ,  G02F2201/126 ,  H04B10/5055 ,  H04B10/5167 ,  H04L25/497

Abstract: There is provided an optical duobinary (ODB) transmission system, including a duobinary precoder receiving data signals and converting the signals into first and second different digital signals each composed of two level voltages; a duobinary encoder fed by the precoder for converting the digital signals into three level analog signals, and a close loop control circuit for maintaining equal drive voltages for driving a Mach Zehnder Modulator (MZM). A method of encoding NRZ data for optical duobinary (ODB) transmission is also provided.

Abstract translation: 提供了一种光双向（ODB）传输系统，包括二进制预编码器接收数据信号并将信号转换成每个由两个电平电压构成的第一和第二不同的数字信号; 由预编码器馈送的用于将数字信号转换为三电平模拟信号的双二进制编码器，以及用于维持用于驱动马赫曾德调制器（MZM）的相等驱动电压的闭环控制电路。 还提供了一种编码用于光学双二进制（ODB）传输的NRZ数据的方法。

公开(公告)号：WO2006043268A1

公开(公告)日：2006-04-27

申请号：PCT/IL2005/001086

申请日：2005-10-16

Applicant: TERASEA LTD. ,  AVIGDOR, Moshe ,  DADON, Roni

Inventor： AVIGDOR, Moshe ,  DADON, Roni

IPC: H04B10/155

CPC classification number: H04B10/505 ,  H04B10/5055 ,  H04B10/5167

Abstract: There is provided a system for increasing transmission distance limited by Optical Signal to Noise Ratio (OSNR), including an optical duobinary transmitter having a duobinary precoder, a Low Pass Filter (LPF) producing a duobinary signal and a modulator, at least one amplifier and a voltage level suppressing logic “zero” voltage unit connected between the LPF and modulator for modifying the waveform of the signal fed into the modulator. A method for increasing transmission distance limited by OSNR is also provided.

Abstract translation: 提供了一种用于增加由光信噪比（OSNR）限制的传输距离的系统，包括具有双二进制预编码器的光双二进制发射机，产生双二进制信号的低通滤波器（LPF）和调制器，至少一个放大器和 连接在LPF和调制器之间的电压电平抑制逻辑“零”电压单元，用于修改馈送到调制器中的信号的波形。 还提供了一种增加由OSNR限制的传输距离的方法。

公开(公告)号：WO2005091534A1

公开(公告)日：2005-09-29

申请号：PCT/IL2005/000325

申请日：2005-03-23

Applicant: TERASEA LTD. ,  CASPI, Motti ,  DADON, Roni ,  ROIF, Efraim

Inventor： CASPI, Motti ,  DADON, Roni ,  ROIF, Efraim

IPC: H04B10/155

CPC classification number: H04B10/5053 ,  H04B10/505 ,  H04B10/5167

Abstract: There is provided an optical duobinary transmission system, including a duobinary precoder receiving data signals and converting the signals into first and second different signals each composed of two level voltages; a two-level digital encoder fed by said precoder; each of the first and second voltage levels lead to a driver, respectively driving one electro-optical modulator for producing two distinct optical output signals, and an optical coupler connected to the output of the modulators output for producing a single optical analog summation signal of the two distinct optical output signals. A method of encoding NRZ data for optical duobinary transmission is also provided.

Abstract translation: 提供了一种光学双二进制传输系统，包括二进制预编码器，接收数据信号并将信号转换成每个由两个电平电压构成的第一和第二不同信号; 由所述预编码器馈送的两级数字编码器; 第一和第二电压电平中的每一个导致驱动器，分别驱动一个电光调制器以产生两个不同的光输出信号，以及连接到调制器输出的输出的光耦合器，用于产生单个光模拟求和信号 两个不同的光输出信号。 还提供了一种用于光学双二进制传输的NRZ数据编码方法。

公开(公告)号：IL164753D0

公开(公告)日：2005-12-18

申请号：IL16475304

申请日：2004-10-21

Applicant: TERASEA LTD

IPC: H04B10/50 ,  H04B10/516 ,  H04B