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US 2007/0177840 A1Published application
Chromatic dispersion compensation using wavelength tunable transmitter
AssigneeLucent Technologies Inc.
InventorLutz Raddatz
Life of this patent
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Abstract
A method and system for high bit rate fiber-optic communications utilize a wavelength tunable transmitter controlled by a feedback signal from an error analyzer associated with a received optical data stream without utilizing a dispersion compensation module in the transmitter and/or receiver portion.
Claims20
Method for receiving high bit rate communications from an optical span having at least one pair of fibers, comprising:
- receiving data at tunable optical wavelengths via a first fiber of a pair of fibers, the optical wavelengths not being subject to compensation during said receiving;
- analyzing errors associated with the received data;
- and
- propagating a control signal toward a wavelength tunable transmitter of the optical wavelengths via at least one of a second fiber of said pair of fibers and a management network, said control signal adapted to modify an optical wavelength transmission parameter in a manner tending to reduce said error data.
1 more element
A system for high bit rate optical communications having a first terminal and a second terminal, each terminal having a transmission portion and a receiving portion, comprising:
- a span having at least one pair of fibers;
- the first terminal coupled to a first end of the span;
- and
- the second terminal coupled to a second end of the span;
- wherein each terminal comprises:
- a wavelength tunable transmitter located at the transmission portion;
- a photo-receiver located at the receiver portion, wherein the receiving portion does not include a dispersion compensation module to compensate for chromatic dispersion of a received data stream from the span;
- and
- an error analyzer associated with the received data stream, wherein the error analyzer provides a feedback signal controlling a wavelength of the wavelength tunable transmitter of the received optical data stream thereby the wavelength of the wavelength tunable transmitter is incrementally adjusted to reduce transmission errors in received optical data streams.
6 more elements
Dependencies are inferred from the claim text.