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    • 4. 发明授权
    • Optical amplifier
    • 光放大器
    • US06411430B1
    • 2002-06-25
    • US09587362
    • 2000-06-02
    • Atsushi OginoMasaru FukushimaYoshihiro EmoriHaruki OgoshiYoshio Tashiro
    • Atsushi OginoMasaru FukushimaYoshihiro EmoriHaruki OgoshiYoshio Tashiro
    • H01S300
    • H04B10/2941H01S3/06758H01S3/10023H01S3/1301H01S2301/06
    • In an optical amplifier having a plurality of rare earth doped optical fibers in a multi-stage, there are provided one or more optical variable attenuator means, and an attenuation amount control means for changing an optical attenuation amount of the optical variable attenuator means on the basis of temperature of the rare earth doped optical fibers or an environmental temperature. In an optical amplifier having a plurality of rare earth doped optical fibers in a multi-stage, between the rare earth doped optical fibers, there are provided a replaceable optical part, one or more optical variable attenuator means, and an attenuation amount control means for changing an optical attenuation amount of the optical variable attenuator means on the basis of temperature of the rare earth doped optical fibers or an environmental temperature. In an optical amplifier having a plurality of rare earth doped optical fibers in a multi-stage, one or more externally controllable optical variable attenuator means are provided, and an optical attenuation amount of the optical variable attenuator means is varied with intensity of input optical signal to the optical amplifier and intensity of output optical signal from the optical amplifier.
    • 在具有多级的多个稀土掺杂光纤的光放大器中,设置有一个或多个光可变衰减器装置和衰减量控制装置,用于将光可变衰减器装置的光衰减量改变为 稀土掺杂光纤的温度基准或环境温度。 在具有多级稀土掺杂光纤的光放大器中,在稀土掺杂光纤之间,设置有可更换的光学部件,一个或多个光可变衰减器装置,以及一个衰减量控制装置, 基于稀土掺杂光纤的温度或环境温度来改变光可变衰减器装置的光衰减量。 在具有多级的多个稀土掺杂光纤的光放大器中,提供一个或多个外部可控光可变衰减器装置,并且光​​可变衰减器装置的光衰减量随着输入光信号的强度而变化 到光放大器和来自光放大器的输出光信号的强度。