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Wavelength-multiplexed light amplifying apparatus, optical amplifier and optical add-and-drop apparatus using wavelength-multiplexed light amplifying basic unit
Wavelength-multiplexed light amplifying apparatus, optical amplifier and optical add-and-drop apparatus using wavelength-multiplexed light amplifying basic unit
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机译：使用波长复用光放大基本单元的波长复用光放大装置，光学放大器和光学分插装置
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摘要
The present invention relates to a wavelength-multiplexed light amplifying apparatus to be used in a state of being connected to a branching portion of a multiplexing/branching unit or to be used for a m×n matrix optical switch of an optical cross-connect. The wavelength-multiplexed light amplifying apparatus is composed of a plurality of wavelength-multiplexed light amplifying units and an optical feedback loop system. A signal input port of an optical branching section in one wavelength-multiplexed light amplifying unit is connected to an output side of an optical amplifying section in the preceding wavelength-multiplexed light amplifying unit. This configuration disperses the power loss of an optical signal to perform amplification with high efficiency and further enables the expansion of the branching port in the in-service. Additionally, it can eliminate the need for the installation of an optical isolator or reduce the required value of isolation to stabilize the system, or can accomplish the control to maintain the gains of all ports constant.
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