OPTICAL TRANSMISSION APPARATUS, OPTICAL TRANSMISSION SYSTEM, AND OPTCIAL TRANSMISSION METHOD
First Claim
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1. An optical transmission apparatus comprising:
- a frame demultiplexer configured to demultiplex a frame signal; and
a transmission process unit configured to modulate the frame signal demultiplexed by the frame demultiplexer to a plurality of subcarrier signals of different wavelengths and transmit the plurality of subcarrier signals,wherein the transmission process unit switches the subcarrier signal that is one of the plurality of subcarrier signals and at which a failure is detected to a subcarrier signal of a backup wavelength different from wavelengths of the plurality of subcarrier signals.
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Abstract
An optical transmission apparatus includes a frame demultiplexer configured to demultiplex a frame signal, and a transmission process unit configured to modulate the frame signal demultiplexed by the frame demultiplexer to a plurality of subcarrier signals of different wavelengths and transmit the plurality of subcarrier signals, wherein the transmission process unit switches the subcarrier signal that is one of the plurality of subcarrier signals and at which a failure is detected to a subcarrier signal of a backup wavelength different from wavelengths of the plurality of subcarrier signals.
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Citations
15 Claims
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1. An optical transmission apparatus comprising:
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a frame demultiplexer configured to demultiplex a frame signal; and a transmission process unit configured to modulate the frame signal demultiplexed by the frame demultiplexer to a plurality of subcarrier signals of different wavelengths and transmit the plurality of subcarrier signals, wherein the transmission process unit switches the subcarrier signal that is one of the plurality of subcarrier signals and at which a failure is detected to a subcarrier signal of a backup wavelength different from wavelengths of the plurality of subcarrier signals. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An optical transmission system comprising:
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a transmitting side optical transmission apparatus configured to include a frame demultiplexer that demultiplexes a frame signal, and a transmission process unit that modulates the frame signal demultiplexed by the frame demultiplexer to a plurality of subcarrier signals of different wavelengths and transmits the plurality of subcarrier signals; and a receiving side optical transmission apparatus configured to include a reception process unit that receives and demodulates the plurality of subcarrier signals transmitted by the transmission process unit, and a frame multiplexer that rebuilds the frame signal from the plurality of subcarrier signals demodulated by the reception process unit, wherein the transmission process unit switches the subcarrier signal that is one of the plurality of subcarrier signals and at which a failure is detected to a subcarrier signal of a backup wavelength, the backup wavelength being different from wavelengths of the plurality of subcarrier signals, and wherein the reception process unit switches one of receiving wavelengths to the backup wavelength, the one of receiving wavelengths being the wavelength of the subcarrier signal at which the failure is detected. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An optical transmission method comprising:
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demultiplexing a frame signal; modulating the demultiplexed frame signal to a plurality of subcarrier signals of wavelengths that are different from each other; transmitting the plurality of subcarrier signals; and switching the subcarrier signal that is one of the plurality of subcarrier signals and at which a failure is detected to a subcarrier signal of a backup wavelength different from the wavelengths of the plurality of subcarrier signals. - View Dependent Claims (14, 15)
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Specification