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    • 9. 发明授权
    • Optical branching apparatus and transmission line switching method
    • 光分路装置和传输线切换方法
    • US5675676A
    • 1997-10-07
    • US693443
    • 1996-08-07
    • Shuji YamashitaKiyoshi Sekikawa
    • Shuji YamashitaKiyoshi Sekikawa
    • G02B6/00H04B10/032H04B10/07H04B10/27H04B10/29H04J14/02H04Q11/00G02B6/28
    • H04Q11/0062H04J14/0201H04J14/0212H04J14/0217H04Q2011/0015H04Q2011/0043H04Q2011/0081H04Q2011/0083H04Q2011/0092
    • An optical branching apparatus in which a pair of optical transmission lines as reverse and forward links are branched into a plurality of lines includes a plurality of wavelength demultiplexing ports and a plurality of optical transmission media. The plurality of wavelength demultiplexing ports have wavelength demultiplexing/multiplexing units each connected to a branch point of each of the optical transmission lines to demultiplex a light beam having different wavelengths from the each optical transmission line and output demultiplexed light beams to branch destinations, and to transmit light beams having different wavelengths and input from branch sources and output a multiplexed light beam to the each optical transmission line. The plurality of optical transmission media connect the wavelength demultiplexing ports corresponding to the reverse link and the wavelength demultiplexing ports corresponding to the forward link in accordance with wavelengths of light beams which are used depending on a normal state and occurrence of a failure.
    • 一种光分路装置,其中一对作为反向和前向链路的光传输线路分支成多条线路包括多个波长解复用端口和多个光传输介质。 多个波长解复用端口具有各自连接到每个光传输线的分支点的波长解复用/复用单元,以从每个光传输线解复用具有不同波长的光束,并将解复用的光束输出到分支目的地,并且 发射具有不同波长的光束并从分支源输入,并将复用的光束输出到每个光传输线。 多个光传输介质根据正常状态和出现故障而使用的光束的波长,将对应于反向链路的波长解复用端口和对应于前向链路的波长解复用端口连接起来。