公开(公告)号：US5946117A

公开(公告)日：1999-08-31

申请号：US569655

申请日：1995-12-08

申请人： Fausto Meli ,  Giorgio Grasso

发明人： Fausto Meli ,  Giorgio Grasso

IPC分类号： G02B6/02 ,  H04B10/02 ,  H04B10/18 ,  H04J14/00 ,  H04J14/02

CPC分类号： H04B10/2525 ,  H04B10/25077 ,  H04B10/25253 ,  H04B10/2563

摘要： An optical telecommunication system has at least two sources of optical modulated signals at different wavelengths in a predetermined transmission wavelength band, together with a multiplexer for the signals, an optical fibre line connected at one end to the multiplexer, and a demultiplexer/receiver for the signals. The line comprises an optical fibre having a chromatic dispersion value lower than a predetermined value in the transmission wavelength band and increasing as wavelength increases. The fibre also has a zero value of chromatic dispersion at a wavelength lower than the minimum wavelength of the transmission wavelength band by such an amount that no local wavelength zero value of the chromatic dispersion present in the fibre and capable of generating a four-wave-mixing phenomenon is included in the band.

摘要翻译： 光通信系统在预定的传输波长带中具有不同波长的至少两个光调制信号源，以及用于信号的多路复用器，一端连接到多路复用器的光纤线路和用于该多路复用器的解复用器/接收器 信号。 该线包括在透射波长带中具有低于预定值的色散值的光纤，并且随着波长的增加而增加。 该光纤在波长比发送波长带的最小波长低的波长处具有零色散值，使得光纤中不存在色散的局部波长零值并且能够产生四波 - 混合现象包括在乐队中。

公开(公告)号：US5903371A

公开(公告)日：1999-05-11

申请号：US729909

申请日：1996-10-15

申请人： Fulvio Arecco ,  Fausto Meli ,  Marcos Antonio Brandao Sanches

发明人： Fulvio Arecco ,  Fausto Meli ,  Marcos Antonio Brandao Sanches

IPC分类号： H04B10/20 ,  H04B10/213 ,  H04J14/02 ,  H04B10/12

CPC分类号： H04J14/0283 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0241 ,  H04J14/0293 ,  H04J14/0294 ,  H04J14/0295 ,  H04J14/0219 ,  H04J14/0221 ,  H04J14/0227

摘要： An optical self-healing-ring communication network is described which include: a first optical communication line, forming a closed optical path; at least two add/drop nodes for optical signals, optically connected along the line; a second optical communication line forming a closed optical path and optically connected to the optical-signal add/drop nodes. Defined in the network are first and second mutually opposite travel directions of the optical signals, with respect to the position of the optical-signal add/drop nodes. At least one of said nodes further comprises selection means, controlled by the optical signals, for the selective dropping of the optical signals from one of the communication lines. At least one of the optical-signal add/drop nodes further include means for the simultaneous input of at least one optical signal in the first direction along the first communication line and in the second direction along the second communication line.

摘要翻译： 描述了一种光学自愈环通信网络，其包括：形成封闭光路的第一光通信线路; 用于光信号的至少两个加/落节点，沿着该线光学连接; 第二光通信线路形成封闭的光路并且光连接到光信号加/分节点。 网络中定义的光信号的第一和第二相互相反的行进方向相对于光信号加/减节点的位置。 所述节点中的至少一个还包括由光信号控制的选择装置，用于从一个通信线路选择性地丢弃光信号。 至少一个光信号添加/分出节点还包括用于沿第一通信线路沿着第一方向并沿第二通信线路沿第二方向同时输入至少一个光信号的装置。

公开(公告)号：US5808787A

公开(公告)日：1998-09-15

申请号：US792711

申请日：1997-01-29

申请人： Fausto Meli ,  Giacomo Stefano Roba

发明人： Fausto Meli ,  Giacomo Stefano Roba

IPC分类号： H04J14/00 ,  G02B6/26 ,  H01S3/067 ,  H01S3/16 ,  H04B10/12 ,  H04B10/17 ,  H04J14/02 ,  H01S3/00

CPC分类号： H04B10/2912 ,  H01S3/06754 ,  H04B10/291 ,  H04B10/2935 ,  H04B10/294 ,  H04J14/0221 ,  H01S2301/04 ,  H01S3/06787 ,  H01S3/1608 ,  H01S3/1691 ,  H01S3/1696 ,  H04B2210/003

摘要： The present invention relates to an optical amplifier and a telecommunication system including a plurality of the optical amplifiers connected in cascade, particularly adapted for a wavelength division multiplexing transmission, in which a combination of dopants in the active fiber core of the optical amplifiers enables a high signal/noise ratio to be achieved for all channels in a predetermined wavelength band, even in the presence of several simultaneously fed signals.

摘要翻译： 本发明涉及一种光放大器和电信系统，其包括级联连接的多个光放大器，特别适用于波分复用传输，其中光放大器的有源光纤芯中的掺杂剂的组合使得高 即使在存在多个同时馈送的信号的情况下，也可以在预定波长频带内对所有信道实现信号/噪声比。