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    • 4. 发明授权
    • Optical transmission system
    • 光传输系统
    • US07430372B2
    • 2008-09-30
    • US11141470
    • 2005-06-01
    • Mamoru SuematsuAkira YamamotoHaruki TanakaHideaki SugiyaYuki MurakamiHisayuki Ojima
    • Mamoru SuematsuAkira YamamotoHaruki TanakaHideaki SugiyaYuki MurakamiHisayuki Ojima
    • H04B10/08H04B17/00
    • H04B10/25133H04B10/077
    • An optical transmission system is provided which is capable of booting the system by using an ASE (Amplified Spontaneous Emission) light in a manner to provide high quality. A pre-amplifier receives noise light and does gain setting in an amplifier booting mode and receives an optical signal and to amplify the received signal in a working mode. A variable dispersion compensator is placed in a preceding-stage of the pre-amplifier and makes compensation of dispersion of a wavelength occurring when an optical signal propagates through an optical fiber in a variable manner. A switching unit to select, when the noise light passes through the variable dispersion compensator, if a level of the noise light is deviated from a desired level, a bypass route so as to make the noise light not be input to the variable dispersion compensator but be input to the pre-amplifier in an amplifier booting mode according to a switching instruction and to select a passage route so as to make the optical signal, after having been input to the variable dispersion compensator and having undergone dispersion compensation, be input to the pre-amplifier according to the switching instruction in a working mode.
    • 提供了一种光传输系统,其能够以提供高质量的方式使用ASE(放大自发发射)光来引导系统。 前置放大器接收噪声光,并以放大器启动模式进行增益设置,并接收光信号并以工作模式放大接收信号。 可变色散补偿器放置在前置放大器的前级中,并且补偿当光信号以可变方式传播通过光纤时出现的波长的色散。 一种开关单元,当噪声光通过可变色散补偿器时,如果噪声光的电平偏离期望的电平,则选择旁路路径,以使得噪声光不被输入到可变色散补偿器,但是 根据切换指令以放大器引导模式输入到前置放大器,并选择通路,以便在输入到可变色散补偿器并经过色散补偿之后使光信号输入到 前置放大器根据切换指令在工作模式下。
    • 7. 发明授权
    • Optical transmission apparatus with automatic gain control and automatic level control mode selection
    • 具有自动增益控制和自动电平控制模式选择的光传输装置
    • US07554720B2
    • 2009-06-30
    • US11407170
    • 2006-04-20
    • Yuki MurakamiHideaki SugiyaAkira Yamamoto
    • Yuki MurakamiHideaki SugiyaAkira Yamamoto
    • H04B10/17H04B10/12
    • H04B10/0797
    • A transmission apparatus designed to be capable of monitoring faults which occur between the input stage of an optical multiplexer and the input stage of an optical amplifier, appropriately switching between automatic gain control and automatic level control, and outputting signal lights with appropriate optical power, without using a spectrum analyzer. The optical multiplexer combines the wavelengths of a plurality of signal lights. The optical amplifier is connected at the latter stage of the optical multiplexer, and operates in the automatic gain control mode or in the automatic level control mode, the automatic gain control mode maintaining a constant gain for wavelength-multiplexed signal light, the automatic level control mode maintaining constant output power for the wavelength-multiplexed signal light. A mode selector selects the automatic gain control mode or the automatic level control mode for the optical amplifier based on the total optical power of the plurality of signal lights to be input to the optical multiplexer and the optical power of the wavelength-multiplexed signal light to be input to the optical amplifier.
    • 一种发送装置,被设计为能够监视在光复用器的输入级与光放大器的输入级之间出现的故障,适当地切换自动增益控制和自动电平控制,并以适当的光功率输出信号灯,而不需要 使用频谱分析仪。 光复用器组合多个信号光的波长。 光放大器在光复用器的后级连接,以自动增益控制模式或自动电平控制模式工作,自动增益控制模式保持波长复用信号光的恒定增益,自动电平控制 模式保持波长复用信号光的恒定输出功率。 模式选择器基于要输入到光复用器的多个信号光的总光功率和波分复用信号光的光功率,选择光放大器的自动增益控制模式或自动电平控制模式 输入到光放大器。
    • 9. 发明申请
    • Optical transmission system
    • 光传输系统
    • US20060188262A1
    • 2006-08-24
    • US11141470
    • 2005-06-01
    • Mamoru SuematsuAkira YamamotoHaruki TanakaHideaki SugiyaYuki MurakamiHisayuki Ojima
    • Mamoru SuematsuAkira YamamotoHaruki TanakaHideaki SugiyaYuki MurakamiHisayuki Ojima
    • H04B10/12
    • H04B10/25133H04B10/077
    • An optical transmission system is provided which is capable of booting the system by using an ASE (Amplified Spontaneous Emission) light in a manner to provide high quality. A pre-amplifier receives noise light and does gain setting in an amplifier booting mode and receives an optical signal and to amplify the received signal in a working mode. A variable dispersion compensator is placed in a preceding-stage of the pre-amplifier and makes compensation of dispersion of a wavelength occurring when an optical signal propagates through an optical fiber in a variable manner. A switching unit to select, when the noise light passes through the variable dispersion compensator, if a level of the noise light is deviated from a desired level, a bypass route so as to make the noise light not be input to the variable dispersion compensator but be input to the pre-amplifier in an amplifier booting mode according to a switching instruction and to select a passage route so as to make the optical signal, after having been input to the variable dispersion compensator and having undergone dispersion compensation, be input to the pre-amplifier according to the switching instruction in a working mode.
    • 提供了一种光传输系统,其能够以提供高质量的方式使用ASE(放大自发发射)光来引导系统。 前置放大器接收噪声光,并以放大器启动模式进行增益设置,并接收光信号并以工作模式放大接收信号。 可变色散补偿器放置在前置放大器的前级中,并且补偿当光信号以可变方式传播通过光纤时出现的波长的色散。 一种开关单元,当噪声光通过可变色散补偿器时,如果噪声光的电平偏离期望的电平,则选择旁路路径,以使得噪声光不被输入到可变色散补偿器,但是 根据切换指令以放大器引导模式输入到前置放大器,并选择通路,以便在输入到可变色散补偿器并经过色散补偿之后使光信号输入到 前置放大器根据切换指令在工作模式下。