WAVELENGTH PATH COMMUNICATION NODE APPARATUS, WAVELENGTH PATH COMMUNICATION CONTROL METHOD, PROGRAM, AND RECORDING MEDIUM
First Claim
1. A wavelength path communication node apparatus that is used in an optical communication network in which respective traffics are assigned by a wavelength division multiplexing transmission method to a plurality of wavelength paths for performing data communication using optical signals having unique wavelengths, wavelength path signals of the wavelength paths are multiplexed into one optical signal, and the optical signal is transmitted via wavelength multiplexing transmission lines, and that switches and connects the wavelength path between the wavelength multiplexing transmission lines, the apparatus comprising:
- a plurality of optical branching couplers which are arranged for the respective wavelength multiplexing transmission lines, and each of which branches power of an optical signal received from the wavelength multiplexing transmission line into a plurality of branched optical signals;
a plurality of multiplexing system wavelength selection switches which are arranged for the respective wavelength multiplexing transmission lines, and each of which selects wavelength path signals of arbitrary wavelengths from the plurality of branched optical signals branched by said optical branching couplers, multiplexes the wavelength path signals into one optical signal, and transmits the optical signal to the wavelength multiplexing transmission line;
a wavelength path demultiplexer which includes a plurality of wavelength multiplexing ports that are arranged for said respective optical branching couplers and receive the branched optical signals from said optical branching couplers, and a plurality of wavelength demultiplexing ports whose connection correspondence with the wavelength multiplexing ports is uniquely determined by a wavelength, and which demultiplexes the branched optical signals input to the wavelength multiplexing ports into wavelength path signals of respective wavelengths, and outputs the wavelength path signals from the wavelength demultiplexing ports corresponding to the respective wavelengths;
a wavelength path multiplexer which includes a plurality of wavelength multiplexing ports that are arranged for said respective multiplexing system wavelength selection switches and output wavelength path signals of at least one wavelength to said multiplexing system wavelength selection switches, and a plurality of wavelength demultiplexing ports whose connection correspondence with the wavelength multiplexing ports is uniquely determined by a wavelength, and which outputs wavelength path signals input to the wavelength demultiplexing ports from the wavelength multiplexing ports corresponding to wavelengths of the wavelength path signals;
a plurality of transponders each of which includes a wavelength path transmission port and a wavelength path reception port, is connected to a client apparatus that performs data communication using a wavelength path of one wavelength, converts a wavelength path signal input to the wavelength path transmission port into a client transmission signal to transmit the client transmission signal to the client apparatus, and converts a client reception signal received from the client apparatus into a wavelength path signal of the wavelength to output the wavelength path signal from the wavelength path reception port;
a demultiplexing system optical matrix switch which switches and connects the wavelength demultiplexing ports of said wavelength path demultiplexer and the wavelength path transmission ports of said transponders; and
a multiplexing system optical matrix switch which switches and connects the wavelength demultiplexing ports of said wavelength path multiplexer and the wavelength path reception ports of said transponders.
1 Assignment
0 Petitions
Accused Products
Abstract
A wavelength path communication node apparatus includes a wavelength path demultiplexer (321) which demultiplexes branched optical signals input to wavelength multiplexing ports into wavelength path signals, and outputs the wavelength path signals from wavelength demultiplexing ports corresponding to the respective wavelengths, a wavelength path multiplexer (322) which outputs wavelength path signals input to wavelength demultiplexing ports from wavelength multiplexing ports corresponding to the wavelengths of the wavelength path signals, a plurality of transponders (331) each of which converts a wavelength path signal input to a wavelength path transmission port into a client transmission signal to transmit the client transmission signal, and converts a received client reception signal into a wavelength path signal of a wavelength to output the wavelength path signal from a wavelength path reception port, a demultiplexing system optical matrix switch (323) which switches and connects the wavelength demultiplexing ports of the wavelength path demultiplexer and the wavelength path transmission ports of the transponders, and a multiplexing system optical matrix switch (324) which switches and connects the wavelength demultiplexing ports of the wavelength path multiplexer and the wavelength path reception ports of the transponders.
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Citations
13 Claims
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1. A wavelength path communication node apparatus that is used in an optical communication network in which respective traffics are assigned by a wavelength division multiplexing transmission method to a plurality of wavelength paths for performing data communication using optical signals having unique wavelengths, wavelength path signals of the wavelength paths are multiplexed into one optical signal, and the optical signal is transmitted via wavelength multiplexing transmission lines, and that switches and connects the wavelength path between the wavelength multiplexing transmission lines, the apparatus comprising:
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a plurality of optical branching couplers which are arranged for the respective wavelength multiplexing transmission lines, and each of which branches power of an optical signal received from the wavelength multiplexing transmission line into a plurality of branched optical signals; a plurality of multiplexing system wavelength selection switches which are arranged for the respective wavelength multiplexing transmission lines, and each of which selects wavelength path signals of arbitrary wavelengths from the plurality of branched optical signals branched by said optical branching couplers, multiplexes the wavelength path signals into one optical signal, and transmits the optical signal to the wavelength multiplexing transmission line; a wavelength path demultiplexer which includes a plurality of wavelength multiplexing ports that are arranged for said respective optical branching couplers and receive the branched optical signals from said optical branching couplers, and a plurality of wavelength demultiplexing ports whose connection correspondence with the wavelength multiplexing ports is uniquely determined by a wavelength, and which demultiplexes the branched optical signals input to the wavelength multiplexing ports into wavelength path signals of respective wavelengths, and outputs the wavelength path signals from the wavelength demultiplexing ports corresponding to the respective wavelengths; a wavelength path multiplexer which includes a plurality of wavelength multiplexing ports that are arranged for said respective multiplexing system wavelength selection switches and output wavelength path signals of at least one wavelength to said multiplexing system wavelength selection switches, and a plurality of wavelength demultiplexing ports whose connection correspondence with the wavelength multiplexing ports is uniquely determined by a wavelength, and which outputs wavelength path signals input to the wavelength demultiplexing ports from the wavelength multiplexing ports corresponding to wavelengths of the wavelength path signals; a plurality of transponders each of which includes a wavelength path transmission port and a wavelength path reception port, is connected to a client apparatus that performs data communication using a wavelength path of one wavelength, converts a wavelength path signal input to the wavelength path transmission port into a client transmission signal to transmit the client transmission signal to the client apparatus, and converts a client reception signal received from the client apparatus into a wavelength path signal of the wavelength to output the wavelength path signal from the wavelength path reception port; a demultiplexing system optical matrix switch which switches and connects the wavelength demultiplexing ports of said wavelength path demultiplexer and the wavelength path transmission ports of said transponders; and a multiplexing system optical matrix switch which switches and connects the wavelength demultiplexing ports of said wavelength path multiplexer and the wavelength path reception ports of said transponders. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wavelength path communication control method used in a wavelength path communication node apparatus that is used in an optical communication network in which respective traffics are assigned by a wavelength division multiplexing transmission method to a plurality of wavelength paths for performing data communication using optical signals having unique wavelengths, wavelength path signals of the wavelength paths are multiplexed into one optical signal, and the optical signal is transmitted via wavelength multiplexing transmission lines, and that switches and connects the wavelength path between the wavelength multiplexing transmission lines, the method comprising the steps of:
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causing each of optical branching couplers arranged for the respective wavelength multiplexing transmission lines to branch power of an optical signal received from the wavelength multiplexing transmission line into a plurality of branched optical signals; causing each of multiplexing system wavelength selection switches arranged for the respective wavelength multiplexing transmission lines to select wavelength path signals of arbitrary wavelengths from the plurality of branched optical signals branched by the optical branching couplers, multiplex the wavelength path signals into one optical signal, and transmit the optical signal to the wavelength multiplexing transmission line; causing a wavelength path demultiplexer including a plurality of wavelength multiplexing ports that are arranged for the respective optical branching couplers and receive the branched optical signals from the optical branching couplers, and a plurality of wavelength demultiplexing ports whose connection correspondence with the wavelength multiplexing ports is uniquely determined by a wavelength, to demultiplex the branched optical signals input to the wavelength multiplexing ports into wavelength path signals of respective wavelengths, and output the wavelength path signals from the wavelength demultiplexing ports corresponding to the respective wavelengths; causing a wavelength path multiplexer including a plurality of wavelength multiplexing ports that are arranged for the respective multiplexing system wavelength selection switches and output wavelength path signals of at least one wavelength to the multiplexing system wavelength selection switches, and a plurality of wavelength demultiplexing ports whose connection correspondence with the wavelength multiplexing ports is uniquely determined by a wavelength, to output wavelength path signals input to the wavelength demultiplexing ports from the wavelength multiplexing ports corresponding to wavelengths of the wavelength path signals; causing a plurality of transponders each including a wavelength path transmission port and a wavelength path reception port, to connect to a client apparatus that performs data communication using a wavelength path of one wavelength, convert a wavelength path signal input to the wavelength path transmission port into a client transmission signal, thereby transmitting the client transmission signal to the client apparatus, and convert a client reception signal received from the client apparatus into a wavelength path signal of the wavelength, thereby outputting the wavelength path signal from the wavelength path reception port; causing a demultiplexing system optical matrix switch to switch and connect the wavelength demultiplexing ports of the wavelength path demultiplexer and the wavelength path transmission ports of the transponders; and causing a multiplexing system optical matrix switch to switch and connect the wavelength demultiplexing ports of the wavelength path multiplexer and the wavelength path reception ports of the transponders. - View Dependent Claims (12)
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13. (canceled)
Specification