Efficient multi-format optical transport of broadband signals for DWDM cable TV networks
OwnerSandeep T. Vohra, Paul J. Matthews +1inventors
InventorsSandeep T. Vohra, Paul J. Matthews, Irl N. Duling
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Abstract
Arrangements are provided for multi-format information optical transport. A multi-format optical signal transport generator is designed to generate a multi-format optical signal based on information in different formats from heterogeneous information sources. Such generated multi-format optical signal is optically transported via an optical fiber. Upon receiving the optical at a receiving end, a multi-format optical signal transport receiver decodes the multi-format optical signal to recover the information of different formats.
Claims32
A multi-format information transport device, comprising:
- a multi-format optical signal transmitter;
- an optical transmission fiber in communication with the multi-format optical signal transmitter;
- and
- a multi-format optical signal receiver in communication with the multi-format optical signal transmitter via the optical transmission fiber, wherein
- said multi-format optical signal transmitter is adapted to generate a multi-format optical signal based on information of different formats from different information sources and to transmit the multi-format optical signal, and
- said multi-format optical signal receiver is adapted to decode the multi-format optical signal to recover the information of different formats.
A multi-format optical signal generation device, comprising:
- a plurality of radio frequency (RF) up-converters;
- an RF combiner connected to the plurality of RF up-converters;
- and
- an optical modulator connected to the RF combiner device, wherein
- each RF up-converter is adapted to up-convert information in an information format from an information source onto an RF sub-carrier to generate an RF signal,
- the RF combiner is constructed to combine RF signals generated by the RF up-conversion devices to generate a sub-carrier multiplexed, multi-format RF signal, and
- the optical modulator is adapted to up-convert the sub-carrier multiplexed, multi-format RF signal onto an optical carrier to generate a sub-carrier multiplexed, multi-format optical signal.
A multi-format optical signal receiving device, comprising:
- an optical demodulator;
- an RF splitter in connection with the optical demodulator;
- and
- a plurality of radio frequency (RF) down-converters in communication with the RF splitter, wherein
- said optical demodulator is adapted to down-convert a sub-carrier multiplexed optical signal to produce a sub-carrier multiplexed, multi-format RF signal,
- said RF splitter is constructed to split the sub-carrier multiplexed, multi-format RF signal into a plurality of RF signals on corresponding RF sub-carriers, and
- each of said RF down-converters converts an RF signal corresponding to an RF sub-carrier to produce information in an information format.
A method of transmitting information in an optical communication system, comprising:
- up-converting a first signal having a first information format onto a first RF carrier;
- up-converting a second signal having a second information format onto a second RF carrier;
- multiplexing said first and second up-converted signals to provide a sub-carrier multiplexed signal;
- modulating an optical carrier with said sub-carrier multiplexed signal to generate an optical signal;
- and
- transmitting said optical signal from a first location to a second location.
Dependencies are inferred from the claim text.