System for selectively combining satellite signals sent to a user through an optical fiber
First Claim
1. A method of transferring a plurality of satellite signals through an optical communication network, such method comprising:
- selecting a frequency of a local oscillator signal within a guardband between a left polarization signal and a right polarization signal of a first satellite signal of the plurality of satellite signals;
frequency shifting the first satellite signal upwards in frequency by the selected frequency;
combining the frequency shifted satellite signal with a second satellite signal of the plurality of satellite signals;
modulating a optical carrier with the combined signals; and
transferring the modulated optical carrier to a receiver through an optical fiber; and
decoding the first and second satellite signals within the receiver.
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Accused Products
Abstract
A method and apparatus are provided for transferring a plurality of satellite signals through an optical communication network. The method includes the steps of selecting a frequency of a local oscillator signal within a guardband between a left polarization signal and a right polarization signal of a first satellite signal of the plurality of satellite signals, frequency shifting the first satellite signal upwards in frequency by the selected frequency. The method further includes the steps of combining the frequency shifted satellite signal with a second satellite signal of the plurality of satellite signals and modulating a optical carrier with the combined signals, transferring the modulated optical carrier to a receiver through an optical fiber and decoding the first and second satellite signals within the receiver.
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Citations
20 Claims
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1. A method of transferring a plurality of satellite signals through an optical communication network, such method comprising:
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selecting a frequency of a local oscillator signal within a guardband between a left polarization signal and a right polarization signal of a first satellite signal of the plurality of satellite signals;
frequency shifting the first satellite signal upwards in frequency by the selected frequency;
combining the frequency shifted satellite signal with a second satellite signal of the plurality of satellite signals;
modulating a optical carrier with the combined signals; and
transferring the modulated optical carrier to a receiver through an optical fiber; and
decoding the first and second satellite signals within the receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for transferring a plurality of satellite signals through an optical communication network, such apparatus comprising:
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a transmitter that further comprises;
a local oscillator that provides an oscillator signal with a frequency selected from within a guardband between a left polarization signal and a right polarization signal of a first satellite signal of the plurality of satellite signals;
a mixer that mixes the local oscillator signal with the first satellite signal to frequency shift the first satellite signal upwards in frequency by the selected frequency; and
a combiner that combines the frequency shifted satellite signal with a second satellite signal of the plurality of satellite signals;
a laser modulated with the combined signals to produce a modulated optical carrier;
a receiver that decodes the first and second satellite signals; and
an optical fiber that connects the transmitter and receiver. - View Dependent Claims (15, 16, 17, 18, 19)
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- 12. The apparatus for transferring the plurality of satellite signals as in claim 12 wherein the receiver further comprises a detector that detects the combined second satellite signal and frequency shifted first satellite signal.
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20. An apparatus for transferring a plurality of satellite signals through an optical communication network, such apparatus comprising:
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means for selecting a frequency within a guardband between a left polarization signal and a right polarization signal of a first satellite signal of the plurality of satellite signals;
means for frequency shifting the first satellite signal upwards in frequency by the selected frequency;
means for combining the frequency shifted satellite signal with a second satellite signal of the plurality of satellite signals;
means for modulating a optical carrier with the combined signals; and
means for transferring the modulated optical carrier to a receiver through an optical fiber; and
means for decoding the first and second satellite signals within the receiver.
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Specification