LARGE-CAPACITY FIBER OPTICAL SWITCHING DEVICE AND OPTICAL TRANSMISSION SYSTEM

摘要

A highly reliable optical switching device and optical switching method ensure restoration of the failure in the large-capacity high density wiring of the multicore fiber with the general number of cores (7 cores, 19 cores and the like). An optical transmission system which transmits a supervisory control signal concerning a transmission path switching to one or more cores of a single or multiple multicore fibers, an active signal to one or more cores, and a standby signal to one or more cores includes optical switching devices connected to respective ends of the optical transmission system. Upon detection of the transmission failure of the active signal based on the signal transmission condition and information from the supervisory control signal, it is switched to the standby signal. The supervisory control signal is transmitted to the center core of the multicore fiber.

主权项

1. An optical switching device comprising:
a multicore fiber having a plurality of cores for transmitting at least one of an active signal and a standby signal, and a supervisory control signal; a failure detection unit for detecting occurrence of a transmission failure of the active signal based on a transmission condition of the active signal and information from the supervisory control signal; and a supervisory control unit for switching a transmission path of the active signal upon reception of the information on the detected transmission failure from the failure detection unit, wherein: the supervisory control signal is transmitted to the core surrounded by the cores to which at least one of the active signal and the standby signal is transmitted; and upon detection of the occurrence of the transmission failure of the active signal by the failure detection unit, the supervisory control unit switches the standby signal to the core different from the one to which the active signal is transmitted.