SYSTEMS AND METHODS FOR PROVIDING AN OPTICAL INFORMATION TRANSMISSION SYSTEM
First Claim
1. An optical information transmission system comprising:
- a duobinary encoder configured to encode a binary data signal as a three-level duobinary signal;
an electrical-to-optical conversion unit configured to convert the three-level duobinary signal into a two-level optical signal; and
an optical upconversion unit configured to modulate the two-level optical signal onto a higher frequency optical carrier signal and transmit the modulated higher frequency optical carrier signal onto an optical transmission medium.
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Abstract
The present invention describes systems and methods of providing optical information transmission systems. An exemplary embodiment of the present invention includes a precoder configured to differentially encode a binary data signal, a duobinary encoder configured to encode the differentially encoded binary data signal as a three-level duobinary signal, an electrical-to-optical conversion unit configured to convert the three-level duobinary signal into a two-level optical signal, and an optical upconversion unit configured to modulate the two-level optical signal onto a higher frequency optical carrier signal and transmit the modulated higher frequency optical carrier signal onto an optical transmission medium.
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Citations
17 Claims
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1. An optical information transmission system comprising:
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a duobinary encoder configured to encode a binary data signal as a three-level duobinary signal; an electrical-to-optical conversion unit configured to convert the three-level duobinary signal into a two-level optical signal; and an optical upconversion unit configured to modulate the two-level optical signal onto a higher frequency optical carrier signal and transmit the modulated higher frequency optical carrier signal onto an optical transmission medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for providing an optical information transmission system comprising:
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encoding a binary data signal into a three-level duobinary signal; converting the three-level duobinary signal into a two-level optical signal; modulating the two-level optical signal onto a higher frequency optical carrier signal; and transmitting the modulated higher frequency optical carrier signal onto an optical transmission medium. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification