US 9,941,963 B2 · Non-linear propagation impairment equalization

Abstract

A method (10) of non-linear propagation impairment equalization, the method comprising the steps of: a. receiving (12) communications traffic carried by an optical communications signal transmitted over an optical communications link; b. generating (14) a time dependent filter representation of a nonlinear time-variant impulse response of the inverse of the optical communications link; and c. applying (16) the time dependent filter representation to the received communications traffic to form non-linear propagation impairment equalized communications traffic. An optical communications link nonlinear propagation impairment equalizer and optical communications signal receiver apparatus are also provided.

Claims18

Dependent claims

A method of non-linear propagation impairment equalization, the method comprising the steps of:

a. receiving communications traffic carried by an optical communications signal transmitted over an optical communications link;
b. generating a time dependent filter representation of a nonlinear time-variant impulse response of the inverse of the optical communications link by generating a discrete-time representation of the nonlinear time-variant impulse response of the inverse of the optical communications link using a frequency resolved log perturbation analytical approximation of the nonlinear Schrödinger equation;
and
c. applying the time dependent filter representation to the received communications traffic to form non-linear propagation impairment equalized communications traffic.

1 more element

An optical communications link nonlinear propagation impairment equalizer comprising:

an input arranged to receive communications traffic carried by an optical communications signal transmitted over an optical communications link;
transfer function generation apparatus arranged to generate a time dependent filter representation of a nonlinear time-variant impulse response of the inverse of the optical communications link by generating a discrete-time representation of the nonlinear time-variant impulse response of the inverse of the optical communications link using a frequency resolved log perturbation analytical approximation of the nonlinear Schrödinger equation;
and
equalization apparatus arranged to apply the time dependent filter representation to the received communications traffic to form non-linear propagation impairment equalized communications traffic.

1 more element

Dependencies are inferred from the claim text.

Non-linear propagation impairment equalization

Life of this patent

Non-linear propagation impairment equalization

Life of this patent

Abstract

Claims18