公开(公告)号：US4685101A

公开(公告)日：1987-08-04

申请号：US683901

申请日：1984-12-20

申请人： Henry P. Segal ,  Carl Dewilde

发明人： Henry P. Segal ,  Carl Dewilde

IPC分类号： H04J3/00 ,  H04J3/04 ,  H04J3/06 ,  H04J3/16 ,  H04J3/22

CPC分类号： H04J3/1641 ,  H04J3/0629

摘要： A digital multiplexer for PCM voice communication is disclosed which operates to multiplex PCM voice channels on DS1, DS1C and DS2 digital transmission lines into one or more DS3 transmission lines and vice versa. On one side of the multiplexer are a number of terminals for connection to the low speed transmission lines. These terminals may be divided into "first terminals" adapted for connection to the incoming branch lines of the low speed (DS0, DS1, DS1C., DS2), duplex PCM highways and "second terminals" adapted for connection to the outgoing branch lines of the respective low speed, duplex PCM highways. On the opposite side of the system are a second set of terminals for connection to the high speed transmission lines. These terminals may be divided into "third terminals" adapted for connection to the incoming branch lines of the respective high speed (DS3), duplex PCM highways and "fourth terminals" adapted for connection to the outgoing branch lines of the respective high speed, duplex PCM highways. A bus network is arranged within the system for routing both digital data (voice samples) and destination or origination addresses throughout the system. The multiplexer operates to route each PCM voice sample received on any voice channel at a first or third terminal to any other PCM voice channel for outgoing transmission at a second or fourth terminal.

摘要翻译： 公开了一种用于PCM语音通信的数字多路复用器，其用于将DS1，DS1C和DS2数字传输线上的PCM语音信道复用到一个或多个DS3传输线中，反之亦然。 在多路复用器的一侧是用于连接到低速传输线的多个端子。 这些终端可以被划分为适于连接到低速（DS0，DS1，DS1C。，DS2）的输入分支线的双端PCM高速公路和适于连接到输出分支线的“第二终端”的“第一终端” 各自的低速，双工PCM高速公路。 在系统的相对侧是用于连接到高速传输线的第二组端子。 这些终端可以被划分为适于连接到相应高速（DS3），双工PCM高速公路的输入分支线的“第三终端”，适于连接到相应高速双工的输出支线的“第四终端” PCM高速公路。 系统内部布置了一个总线网络，用于在整个系统中路由数字数据（语音样本）和目的地或发起地址。 复用器操作以将在第一或第三终端处的任何语音信道上接收的每个PCM语音样本路由到任何其他PCM语音信道，用于在第二或第四终端进行传输。

公开(公告)号：US06876489B2

公开(公告)日：2005-04-05

申请号：US10414890

申请日：2003-04-15

申请人： Mohammed N. Islam ,  Carl Dewilde ,  Michael Freeman

发明人： Mohammed N. Islam ,  Carl Dewilde ,  Michael Freeman

IPC分类号： H01S3/067 ,  H01S3/094 ,  H01S3/30 ,  H04B10/17 ,  H04B10/18 ,  H01S3/00

CPC分类号： H04B10/25253 ,  H01S3/06758 ,  H01S3/094015 ,  H01S3/302 ,  H04B10/2916 ,  H04B2210/003

摘要： A Raman amplifier apparatus includes an optical transmission line with an input to receive an optical signal, an output that passes the optical signal, a first Raman gain fiber and a second Raman gain fiber. A first WDM is positioned between the second Raman gain fiber and the output. A first set of pump wavelengths is input to the first WDM. A second WDM is positioned between the first and second Raman gain fibers. A second set of pump wavelengths is input to the second WDM. At least a portion of the first set of pump wavelengths are different than the second set of pump wavelengths. The first and second set of pump wavelengths propagate in the same direction.

摘要翻译： 拉曼放大器装置包括具有用于接收光信号的输入的光传输线，通过光信号的输出，第一拉曼增益光纤和第二拉曼增益光纤。 第一WDM位于第二拉曼增益光纤和输出之间。 第一组泵浦波长被输入到第一WDM。 第二WDM位于第一和第二拉曼增益光纤之间。 将第二组泵波长输入到第二WDM。 第一组泵浦波长的至少一部分不同于第二组泵浦波长。 第一组和第二组泵浦波长沿相同方向传播。

公开(公告)号：US06618192B2

公开(公告)日：2003-09-09

申请号：US09847949

申请日：2001-05-02

申请人： Mohammed Islam ,  Carl Dewilde ,  Michael Freeman

发明人： Mohammed Islam ,  Carl Dewilde ,  Michael Freeman

IPC分类号： H01S300

CPC分类号： H04B10/2916 ,  H01S3/06758 ,  H01S3/094015 ,  H01S3/302 ,  H04B10/25253 ,  H04B2210/003

摘要： An amplifier apparatus includes an optical transmission line with a Raman amplification region that provides a pump to signal power conversion efficiency of at least 20%. The Raman amplification region is configured to amplify a signal with multiple wavelengths over at least a 30 nm range of wavelengths. A pump source is coupled to the optical transmission line. An input optical signal is amplified in the Raman amplification region and an output signal is generated that has at least 100 mW more power than the input optical signal.

公开(公告)号：US06574037B2

公开(公告)日：2003-06-03

申请号：US09768367

申请日：2001-01-22

申请人： Mohammed N. Islam ,  Carl Dewilde ,  Michael Freeman

发明人： Mohammed N. Islam ,  Carl Dewilde ,  Michael Freeman

IPC分类号： H01S300

CPC分类号： H04B10/25253 ,  H01S3/06758 ,  H01S3/094015 ,  H01S3/302 ,  H04B10/2916 ,  H04B2210/003

摘要： A Raman amplifier apparatus includes an optical transmission line with an input to receive an optical signal, an output that passes the optical signal, a first Raman gain fiber and a second Raman gain fiber. A first WDM is positioned between the second Raman gain fiber and the output. A first set of pump wavelengths is input to the first WDM. A second WDM is positioned between the first and second Raman gain fibers. A second set of pump wavelengths is input to the second WDM. At least a portion of the first set of pump wavelengths are different than the second set of pump wavelengths. The first and second set of pump wavelengths propagate in the same direction.