Method and system for monitoring non-linear effects along an optical communication line
AssigneeHuawei Technologies Co., Ltd.
InventorZhiping Jiang
Life of this patent
Estimating the term…
Abstract
Systems and methods for monitoring non-linear effects along an optical communication line transmitting an optical signal, the optical signal being formed from a plurality of sub-signals, each sub-signal being carried over a corresponding wavelength of a plurality of wavelengths. The method includes modulating, by a power dither, an optical power of a first set of sub-signals among the plurality of sub-signals at an output of a first amplifier assembly of the optical communication line; and determining, at a second amplifier assembly of the optical communication line downstream from the first amplifier assembly, a gain modulation affecting a second set of sub-signals due to the modulation of the optical power of the first set of sub-signals.
Claims20
A method for monitoring non-linear effects along an optical communication line transmitting an optical signal, the optical signal being formed from a plurality of sub-signals, each sub-signal being carried over a corresponding wavelength of a plurality of wavelengths, the method comprising:
- modulating, by a power dither, an optical power of a first set of sub-signals among the plurality of sub-signals at an output of a first amplifier assembly of the optical communication line;
- and
- determining, at a second amplifier assembly of the optical communication line downstream from the first amplifier assembly, a gain modulation affecting a second set of sub-signals due to the modulation of the optical power of the first set of sub-signals.
An optical system for monitoring non-linear effect along an optical communication line transmitting an optical signal, the system comprising:
- a controller;
- a first amplifier assembly operatively connected to the controller, the first amplifier assembly being optically connected to the optical communication line;
- and
- a second amplifier assembly operatively connected to the controller, the second amplifier assembly being optically connected to the optical communication line,
- the optical signal being formed from a plurality of sub-signals, each sub-signal being carried over a corresponding wavelength of a plurality of wavelengths,
- the controller being configured to:
- modulate, by a power dither, an optical power of a first set of sub-signals among the plurality of sub-signals at an output of a first amplifier assembly of the optical communication line;
- and
- determine, at a second amplifier assembly of the optical communication line downstream from the first amplifier assembly, a gain modulation affecting a second set of sub-signals due to the modulation of the optical power of the first set of sub-signals.
Dependencies are inferred from the claim text.