Method and a system for protecting data transmitted on an optical ring formed of a single optical fiber
    1.
    发明授权
    Method and a system for protecting data transmitted on an optical ring formed of a single optical fiber 有权
    用于保护在由单根光纤形成的光环上传输的数据的方法和系统

    公开(公告)号:US06813413B2

    公开(公告)日:2004-11-02

    申请号:US10234125

    申请日:2002-09-05

    IPC分类号: G02B628

    摘要: A method is disclosed of reconfiguring a ring optical network made using a single optical fiber (100). A traffic concentrator (120) and stations (140) are optically connected to the fiber. The concentrator sends a light signal to and receives a light signal from both ends of the fiber using two groups of wavelengths (110, 150) in order to be able to communicate with all the stations. When the network is established, a virtual break (170) is created between two stations. If a real break is detected in the optical fiber, then the virtual break is shifted until it coincides with the real break, thereby enabling traffic to be re-established between the concentrator and the stations. Each station is equipped with a three-state optical switch (400) for changing the direction of the light signals.

    摘要翻译: 公开了一种重新配置使用单个光纤(100)制造的环形光网络的方法。 交通集中器(120)和站(140)光纤连接到光纤。 集中器将光信号发送到光纤两端,并使用两组波长(110,150)接收光信号,以便能够与所有站通信。 当网络建立时,在两个站之间创建虚拟中断(170)。 如果在光纤中检测到真实的中断,则虚拟断点被移动,直到与真实断裂重合,从而使能够在集中器和站之间重新建立业务。 每个站配备有用于改变光信号的方向的三态光开关(400)。

    Optical spectral multiplexer for inserting and extracting
    2.
    发明授权
    Optical spectral multiplexer for inserting and extracting 失效
    用于插入和提取的光谱多路复用器

    公开(公告)号:US06262821B1

    公开(公告)日:2001-07-17

    申请号:US09077974

    申请日:1998-06-09

    IPC分类号: H04J1402

    摘要: An extract-and-insert optical wavelength division multiplexer includes a broadcaster (D1) for applying an incoming multiplex signal to N outputs, a combiner-diffuser (D2) for broadcasting the multiplex to be inserted (MI) on N outputs, a first set of N tunable filters (FIT, . . . , FNT) for selecting the carriers of the signals which are to be used for modulating the carriers of the outgoing multiplex (MS), a second set of N tunable filters (F1E, . . . , FNE) for selecting the carriers which are to constitute the extracted multiplex (MT), N wavelength converter devices (CL1, . . . , CLN) suitable for supplying N carriers of the outgoing multiplex (MS), and N two-input, two-output optical switches (SW1, . . . , SWN) enabling each output of the broadcasters (D1, D2) to be selectively connected to the input of a filter of the first set and/or to the input of a filter of the second set, and/or to transmit the carriers of the multiplex to be inserted (MI) to a filter of the first set and/or a filter of the second set. The multiplexer is particularly applicable to optical transmission networks implementing a synchronous digital hierarchy.

    摘要翻译: 提取和插入光波分复用器包括用于将输入复用信号施加到N个输出的广播器(D1),用于在N个输出上广播待插入的多路复用(MI)的组合器扩散器(D2),第一组 用于选择要用于调制输出多路复用(MS)的载波的信号的载波的N个可调滤波器(FIT,...,FNT),第二组N个可调滤波器(F1E,..., ,FNE),用于选择构成提取的多路复用(MT)的载波,适用于提供输出多路复用(MS)的N个载波的N个波长转换器装置(CL1,...,CLN)和N个双输入, 使两个输出光开关(SW1,...,SWN)能够使广播商(D1,D2)的每个输出选择性地连接到第一组的滤波器的输入和/或与 和/或将待插入的多路复用的载波(MI)发送到第一组和/或第二组的滤波器 第二组的过滤器。 复用器特别适用于实现同步数字层级的光传输网络。

    Add-drop optical spectrum-division multiplexer
    3.
    发明授权
    Add-drop optical spectrum-division multiplexer 失效
    分插光谱分割多路复用器

    公开(公告)号:US5612805A

    公开(公告)日:1997-03-18

    申请号:US460562

    申请日:1995-06-02

    摘要: An add-drop optical spectrum-division multiplexer for dropping a drop multiplex from an incoming multiplex signal and for adding an add multiplex into an outgoing multiplex signal. The multiplexer includes a demultiplexing device for separating a number of optical carriers from the incoming multiplex signal and for selecting drop carriers which constitute the drop multiplex as well as through carriers which are to be output as the outgoing multiplex signal. The multiplexer further includes an apparatus for selecting a certain number of add carriers from the total number of carriers of the add multiplex, and a coupling device and wavelength converter for allocating fixed wavelengths to the signals which modulate the through carriers and the add carriers.

    摘要翻译: 一种用于从输入多路复用信号中丢弃分路复用并用于将多路复用加到输出多路复用信号中的分插光谱分段多路复用器。 多路复用器包括用于从输入复用信号中分离多个光载波并用于选择构成丢包多路复用的载波并通过作为输出多路复用信号输出的载波的解复用装置。 多路复用器还包括一个用于从加法多路复用的载波总数中选择一定数量的加法载波的装置,以及耦合器件和波长转换器,用于将固定波长分配给调制通过载波和加载波的信号。