Systems and methods for chromatic dispersion pre-compensation
AssigneeCable Television Laboratories, Inc.
InventorsMu Xu, Zhensheng Jia, Haipeng Zhang, Luis Alberto Campos, Junwen Zhang
Life of this patent
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Abstract
A method for chromatic dispersion pre-compensation in an optical communication network includes (1) distorting an original modulated signal according to an inverse of a transmission function of the optical communication network, to generate a compensated signal, (2) modulating a magnitude of an optical signal in response to a magnitude of the compensated signal, and (3) modulating a phase of the optical signal, after modulating the magnitude of the optical signal, in response to a phase of the compensated signal.
Claims15
A method for chromatic dispersion pre-compensation in an optical communication network, comprising:
- distorting an original modulated signal according to an inverse of a transfer function of the optical communication network, at least partially by applying the inverse of the transfer function of the optical communication network to a plurality of blocks derived from the original modulated signal, to generate a pre-compensated signal;
- modulating a magnitude of an optical signal in response to a magnitude of the pre-compensated signal;
- and
- modulating a phase of the optical signal in response to a phase of the pre-compensated signal.
A transmitter system configured to perform chromatic dispersion pre-compensation, comprising:
- a signal generator configured to distort an original modulated signal according to an inverse of a transfer function of an optical communication network, at least partially by applying the inverse of the transfer function of the optical communication network to a plurality of blocks derived from the original modulated signal, to generate a pre-compensated signal;
- a laser configured to modulate an amplitude of an optical signal in response to a magnitude of the pre-compensated signal;
- and
- a phase modulator disposed downstream of the laser with respect to the optical signal, the phase modulator being configured to modulate a phase of the optical signal in response to a phase of the pre-compensated signal.
A method for chromatic dispersion pre-compensation in an optical communication network, comprising:
- distorting an original modulated signal according to an inverse of a transfer function of the optical communication network, at least partially by applying the inverse of the transfer function of the optical communication network to a plurality of blocks derived from the original modulated signal, to generate a pre-compensated signal;
- and
- modulating a magnitude of an optical signal in response to a magnitude of the pre-compensated signal.
Dependencies are inferred from the claim text.