US Patent Application 18024857. OPTICAL COMMUNICATION SYSTEM, MONITORING DEVICE, AND MONITORING METHOD simplified abstract

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OPTICAL COMMUNICATION SYSTEM, MONITORING DEVICE, AND MONITORING METHOD

Organization Name

Nippon Telegraph and Telephone Corporation

Inventor(s)

Hirotaka Ujikawa of Musashino-shi, Tokyo (JP)

Tomoya Hatano of Musashino-shi, Tokyo (JP)

Yuka Okamoto of Musashino-shi, Tokyo (JP)

Sei Kou of Musashino-shi, Tokyo (JP)

OPTICAL COMMUNICATION SYSTEM, MONITORING DEVICE, AND MONITORING METHOD - A simplified explanation of the abstract

This abstract first appeared for US patent application 18024857 titled 'OPTICAL COMMUNICATION SYSTEM, MONITORING DEVICE, AND MONITORING METHOD

Simplified Explanation

The patent application describes an optical communication system with a looped path, consisting of an active trunk fiber and a standby trunk fiber connected in a loop.

  • The active trunk fiber has multiple optical combining/splitting units in series, each connected to a slave device.
  • A master device communicates optically with each slave device.
  • Each optical combining/splitting unit has an optical sensor to detect optical signals and a transmitter.
  • The transmitter sends an abnormality notification to a monitoring apparatus if there is an abnormality in optical communication, including identification information of the unit.
  • The monitoring apparatus maintains connection relationship information between the combining/splitting units along the active trunk fiber.
  • If the monitoring apparatus receives an abnormality notification, it identifies the failure position on the communication path based on the unit's identification information and the connection relationship information.


Original Abstract Submitted

An optical communication system includes a looped path in which an active trunk fiber and a standby trunk fiber are connected in a loop. A plurality of optical combining/splitting units is provided on an active trunk fiber in series, and a plurality of slave devices is connected the plurality of optical combining/splitting units, respectively. A master device performs optical communication with each slave device. Each optical combining/splitting unit includes an optical sensor configured to detect an optical signal passing through an optical fiber and a transmitter. The transmitter determines whether or not there is an abnormality in optical communication on the basis of a detection state of the optical signal and transmits an abnormality notification including identification information of the optical combining/splitting unit to a monitoring apparatus in a case where there is an abnormality. The monitoring apparatus holds connection relationship information indicating a connection relationship between the plurality of optical combining/splitting units along the active trunk fiber. In a case where the monitoring apparatus receives the abnormality notification from at least one of the plurality of optical combining/splitting units, the monitoring apparatus specifies a failure position on a communication path on the basis of identification information of each optical combining/splitting unit that has transmitted the abnormality notification and the connection relationship information.

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