Split wave method and apparatus for transmitting data in long-haul optical fiber systems
First Claim
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1. A method of transmitting optical signals in an optical communication system, comprising:
- receiving an optical input that has a first data rate;
splitting the optical input into a plurality of sub-wavelengths, wherein the plurality of sub-wavelengths are spaced sufficiently close in wavelength to provide a spectral efficiency of all the sub-wavelengths of the plurality of sub-wavelengths that is close to or greater than a spectral efficiency of the optical input;
combining the plurality of sub-wavelengths.
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Abstract
A method is provided for transmitting optical signals in an optical communication system. An optical input is received that has a first data rate and is split into a plurality of sub-wavelengths. The plurality of sub-wavelengths are spaced sufficiently close in wavelength to provide a spectral efficiency of all the sub-wavelengths that is close to or greater than a spectral efficiency of the optical input. The plurality of sub-wavelengths are then combined.
57 Citations
51 Claims
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1. A method of transmitting optical signals in an optical communication system, comprising:
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receiving an optical input that has a first data rate;
splitting the optical input into a plurality of sub-wavelengths, wherein the plurality of sub-wavelengths are spaced sufficiently close in wavelength to provide a spectral efficiency of all the sub-wavelengths of the plurality of sub-wavelengths that is close to or greater than a spectral efficiency of the optical input;
combining the plurality of sub-wavelengths. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 29, 30, 31)
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28. A method of transmitting optical signals in an optical communication system, comprising:
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receiving an optical input that has a first spectral efficiency;
splitting the optical input into a plurality of sub-wavelengths, wherein the plurality of sub-wavelengths have a combined spectral efficiency close to or greater than that the first spectral efficiency; and
combining the plurality of sub-wavelengths.
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32. A method of transmitting optical signals in an optical communication system, comprising:
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receiving an optical input that has a first data rate;
splitting the optical input into a plurality of sub-wavelengths, wherein each of a sub-wavelength of the plurality of sub-wavelengths is in a single ITU window; and
combining the plurality of sub-wavelengths.
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33. A long haul optical communication system, comprising:
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a first optical-to-electronic converter and a first electronic demultiplexer configured to receive and split an optical input into a plurality of sub-wavelengths, the optical input having a first data rate;
a plurality of optical transmitters coupled to the first electronic demultiplexer, wherein the plurality of optical transmitters are configured to transmit the plurality of sub-wavelengths with a wavelength spacing sufficiently close to provide a spectral efficiency of all the sub-wavelengths of the plurality of sub-wavelengths close to or greater than a spectral efficiency of the optical input;
a first optical multiplexer or first coupler;
a second optical demultiplexer, splitter or an OADM; and
a plurality of receivers coupled to the optical multiplexer or splitter and the first optical multiplexer or first coupler. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A long haul optical communication system, comprising:
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a first optical-to-electronic converter and a first electronic demultiplexer;
an optical transmitter with a common optical carrier coupled to the first electronic demultiplexer, the optical transmitter being configured to modulate the common optical carrier by using demultiplexed electronic signals and splitting an optical input with a first data rate into a plurality of sub-wavelengths, wherein sub-wavelengths of the plurality of sub-wavelengths each have a spectral efficiency close to or greater than a spectral efficiency of the optical input;
an optical demultiplexer or optical splitter;
a second electronic multiplexer; and
a plurality of receivers positioned to receive input from the optical demultiplexer or the optical splitter and produce an output that is coupled to the second electronic multiplexer. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51)
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Specification