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    • 9. 发明申请
    • Optical wavelength multiplex transmission apparatus, control method thereof and optical wavelength multiplex transmission system
    • 光波长复用传输装置及其控制方法和光波长复用传输系统
    • US20080037991A1
    • 2008-02-14
    • US11889190
    • 2007-08-09
    • Katsumi SugawaTakeshi Noma
    • Katsumi SugawaTakeshi Noma
    • H04J14/02
    • H04J14/0221H04J14/02H04J14/0206
    • An optical wavelength multiplex transmission apparatus includes a demultiplexer (12) that divides a wavelength-multiplexed optical signal into optical signals of individual wavelengths, an optical attenuation control portion (13) that performs an optical attenuation control so that levels of the optical signals of individual wavelengths become constant, a multiplexer (16) that combines the optical signals of individual wavelengths after the optical attenuation control and multiplexes them, an optical signal level storing portion (15) that stores a first level range of optical signal levels, and an optical attenuation control stopping portion (22) that decides whether or not a level of each of the optical signals of individual wavelengths is within the first level range obtained from the optical signal level storing portion (15), and if its level is within the first level range, stops the optical attenuation control for an optical signal of a wavelength having the level.
    • 光波长多路复用传输装置包括将波分复用光信号划分成各个波长的光信号的解复用器(12),执行光衰减控制的光衰减控制部分(13),使得个别光信号的光信号电平 波长变得恒定;多路复用器(16),其在光学衰减控制之后组合各个波长的光信号并对其进行复用;光信号电平存储部分(15),其存储光信号电平的第一电平范围;以及光衰减 决定各个波长的各个光信号的电平是否处于从光信号电平存储部(15)获得的第一电平范围内的控制停止部(22),如果其电平在第一电平范围内 停止具有该电平的波长的光信号的光衰减控制。