FIBER-OPTIC COMMUNICATION DEVICE AND FIBER-OPTIC COMMUNICATION SYSTEM
First Claim
1. A fiber-optic communication device comprising:
- a modulator configured to modulate a number (N) of radio-frequency carriers respectively with a number (N) of digital stream, signals so as to generate respectively a number (N) of modulated signals having respective different central frequencies, where (N) is an integer greater than 1;
a combiner coupled to said modulator for receiving the modulated signals therefrom, and configured to combine the modulated signals into a combined signal having a number (N) of different frequency components; and
an electronic-to-optical transducer coupled to said combiner for receiving the combined signal therefrom, and configured to convert the combined signal into a single-wavelength optical signal carrying a number (N) of radio frequency signals that have respective different central frequencies.
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Accused Products
Abstract
A fiber-optic communication device includes a modulator, a combiner and an electronic-to-optical transducer. The modulator is to modulate a number (N) of radio-frequency carriers respectively with a number (M) of digital stream signals respectively into a number (N) of modulated signals having different central frequencies. The combiner is to receive the modulated signals, and to combine the modulated signals into a combined signal having a number (N) of different frequency components. The electronic-to-optical transducer is to receive the combined signal, and to convert the combined signal into a single-wavelength optical signal carrying a number (N) of radio frequency signals having different central frequencies.
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Citations
8 Claims
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1. A fiber-optic communication device comprising:
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a modulator configured to modulate a number (N) of radio-frequency carriers respectively with a number (N) of digital stream, signals so as to generate respectively a number (N) of modulated signals having respective different central frequencies, where (N) is an integer greater than 1; a combiner coupled to said modulator for receiving the modulated signals therefrom, and configured to combine the modulated signals into a combined signal having a number (N) of different frequency components; and an electronic-to-optical transducer coupled to said combiner for receiving the combined signal therefrom, and configured to convert the combined signal into a single-wavelength optical signal carrying a number (N) of radio frequency signals that have respective different central frequencies. - View Dependent Claims (2)
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3. A fiber-optic communication device comprising:
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an optical-to-electronic transducer configured to convert a single-wavelength optical signal carrying a number (M) of radio frequency signals into a complex signal having a number (M) of different frequency components, the radio frequency signals having respective different central frequencies, where (M) is an integer greater than 1; a signal separator coupled to said optical-to-electronic transducer for receiving the complex signal therefrom, and configured to separate the complex signal into a number (M) of sub-signals each having a number (M) of different frequency components; and a number (M) of demodulators coupled to said signal separator for receiving respectively the sub-signals therefrom, each of said demodulators being configured to demodulate the respective one of the sub-signals for extracting an extracted digital signal from one of the frequency components of the respective one of the sub-signals. - View Dependent Claims (4)
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5. A fiber-optic communication system comprising;
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a first fiber-optic communication device including a modulator configured to modulate a number (N) of radio-frequency carriers respectively with a number (N) of digital stream signals so as to generate respectively a number (N) of modulated signals having respective different central frequencies, where (N) is an integer greater than 1, a combiner coupled to said modulator for receiving the modulated signals therefrom, and configured to combine the modulated signals into a combined signal having a number (N) of different frequency components, and an electronic-to-optical transducer coupled to said combiner for receiving the combined signal therefrom, and configured to convert the combined signal into a single-wavelength optical signal carrying a number (N) of radio frequency signals that have respective different central frequencies; a fiber-optic communication network coupled to said first fiber-optic communication device for transmitting a plurality of optical sub-signals divided from the single-wavelength optical signal, each of the optical sub-signals having a number (N) of different frequency components; and a plurality of second fiber-optic communication devices coupled to said first fiber-optic communication device through said fiber-optic communication network for receiving respectively the optical sub-signals of the single-wavelength, optical signal, each of said second fiber-optic communication devices including an optical-to-electronic device transducer configured to receive the respective one of the optical sub-signals of the single-wave length optical, signal, and to convert the respective one of the optical, sub-signals into a complex signal having a number (N) of different frequency components, and a processing module coupled to said optical-to-electronic transducer for receiving the complex signal therefrom, and configured to extract an extracted digital signal from one of the frequency components of the complex signal that corresponds to a predetermined central frequency. - View Dependent Claims (6, 7, 8)
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Specification