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OwnerShigeki Kitajima, Shoichi Hanatani +2inventors
InventorsShigeki Kitajima, Shoichi Hanatani, Hirohisa Sano, Tatsuo Kanetake
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Input/output fibers for the optical cross-connect system are classified into working fibers and protecting fibers. In a normal time (a state in which there occurs no failure), there turns out to be a one-to-one correspondence between a line terminal and a working fiber. Namely, connection property required for the switch matrix in the optical cross-connect system is not necessarily strictly non-blocking connections among all of the fibers. The connection property is a one-to-one connection relationship with the working fibers, and is a predetermined connection relationship with the protecting fibers at the time of a failure occurrence. Utilization thereof makes it possible to extremely downsize scale of the switch.
An optical cross-connect system provided among line terminals, working fibers and protecting fibers, and switching a fiber connected-with, said line terminals, comprising:
An optical cross-connect system wherein a switching optical switch is provided between an input/output port connected with line terminals and an input/output port connected with transmission paths corresponding to said line terminals, and a protecting path setting optical switch unit, through said switching optical switch, connects said line terminals with connection ports to protecting transmission paths.
Dependencies are inferred from the claim text.