Demonstration of Optical Power-fluctuation Suppression in Flexible Optical Path Node

DOI
  • FURUKAWA Hideaki
    National Institute of Information and Communications Technology
  • SHIRAIWA Masaki
    National Institute of Information and Communications Technology
  • HIROTA Yusuke
    National Institute of Information and Communications Technology
  • SHINADA Satoshi
    National Institute of Information and Communications Technology
  • HARAI Hiroaki
    National Institute of Information and Communications Technology
  • WADA Naoya
    National Institute of Information and Communications Technology

Bibliographic Information

Other Title
  • フレキシブル光パスノードにおける光強度変動抑制機能の実証

Abstract

In near-future optical networks, it is required to operate optical paths promptly and flexibly in order to cope with dynamic changes in communication service demands. However, in conventional optical nodes such as ROADM and OXC, it is difficult to cope with the complicated power fluctuation of optical signals when a large number of optical paths are controlled. In this paper, we propose a novel flexible optical path node with optical power-fluctuation suppression function that enables high speed control of multiple optical paths. We newly introduce a burst mode optical amplifier and a high-speed optical attenuator using an acousto-optic device as optical power control devices capable of handling multiple wavelengths at this node. We evaluate the characteristics of these devices. In addition, we develop an optical node system by combining these devices for verifying the operation and perform optical power control for multiple optical paths. We successfully demonstrate that the optical power fluctuation of multiple optical paths can be suppressed at an operation speed of about 7 μs.

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