WAVELENGTH MULTIPLEXER, AND METHOD AND PROGRAM FOR IDENTIFYING FAILED PORTION
First Claim
1. A wavelength multiplexer connected with and provided between a plurality of systems or a single system of optical fiber lines and a plurality of systems or a single system of optical transponders, and inputting and outputting an optical signal to and from the optical fiber lines and the optical transponders, the wavelength multiplexer comprising:
- a first optical switch that outputs an optical signal input from the optical fiber lines to the optical transponders;
a second optical switch that outputs an optical signal input from the optical transponders to the optical fiber lines; and
a local optical loopback circuit that loops back and outputs an optical signal input from any of the optical transponders to the side of that optical transponder.
1 Assignment
0 Petitions
Accused Products
Abstract
To provide a wavelength multiplexing device and the like that can effectively identify whether impairment occurs at a location before or after a separation and switching module, a wavelength multiplexing device (100) is connected to one or more optical fiber line systems and to one or more optical transceiver systems and is disposed between the optical fiber lines and optical transceivers so as to input and output optical signals, and is provided with the following: first optical switches (12a-12c) that output an optical signal input from an optical line to an optical transceiver; second optical switches (12d-12f) that output an optical signal input from an optical transceiver to an optical fiber line; and a local optical loopback circuit (13) that feeds back and outputs an optical signal input from an optical transceiver (21-23) to that optical transceiver.
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Citations
8 Claims
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1. A wavelength multiplexer connected with and provided between a plurality of systems or a single system of optical fiber lines and a plurality of systems or a single system of optical transponders, and inputting and outputting an optical signal to and from the optical fiber lines and the optical transponders, the wavelength multiplexer comprising:
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a first optical switch that outputs an optical signal input from the optical fiber lines to the optical transponders; a second optical switch that outputs an optical signal input from the optical transponders to the optical fiber lines; and a local optical loopback circuit that loops back and outputs an optical signal input from any of the optical transponders to the side of that optical transponder. - View Dependent Claims (2, 3, 4, 5)
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6. A method for identifying a failed portion executed by a module inspection unit included in a split-and-select module included in a wavelength multiplexer, the split-and-select module being connected with a plurality of systems of optical fiber lines and optical transponders and inputting and outputting an optical signal to and from the optical fiber lines and the optical transponders,
the split-and-select module comprising: - a local optical loopback circuit that loops back and outputs an optical signal input from any of the optical transponders to the side of the side of that optical transponder;
first optical switches that selectively output the optical signal received from the optical fiber lines or the optical signal looped back by the local optical loopback circuit to the optical transponders by an external switching operation;
second optical switches that selectively output the optical signal received from the optical transponders to one system of the optical fiber lines or the local optical loopback circuit by an external switching operation; and
the module inspection unit that operates in accordance with an external operational instruction, the method comprising;controlling switching of the first optical switches so as to output the optical signal looped back by the local optical loopback circuit to the optical transponders; at the same time, controlling switching of the second optical switches so as to output the optical signal received from the optical transponders to the local optical loopback circuit; and then causing the optical transponders to operate and emit the optical signal and determining whether the optical transponders have received the optical signal looped back by the local optical loopback circuit.
- a local optical loopback circuit that loops back and outputs an optical signal input from any of the optical transponders to the side of the side of that optical transponder;
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7. (canceled)
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8. A wavelength multiplexer connected with and provided between a plurality of systems or a single system of optical fiber lines and a plurality of systems or a single system of optical transponders, and inputting and outputting an optical signal to and from the optical fiber lines and the optical transponders, the wavelength multiplexer comprising:
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first optical switching means for outputting an optical signal input from the optical fiber lines to the optical transponders; second optical switching means for outputting an optical signal input from the optical transponders to the optical fiber lines; and local optical loopback means for looping back and outputting an optical signal input from any of the optical transponders to the side of that optical transponder.
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Specification