Back to results
US 10,484,123 B2Granted
Apparatus and method for distributed compensation of narrow optical filtering effects in an optical network
AssigneeAT&T Intellectual Property I, L.P.
InventorXiang Zhou
Life of this patent
Estimating the term…
Abstract
The present disclosure describes a reconfigurable optical add-drop multiplexer including a wavelength selective switch configured to filter wavelengths of an optical signal; and an optical equalizer, coupled to the wavelength selective switch, configured to equalize the optical signal to mitigate optical filtering effects caused by the wavelength selective switch.
Claims20
A method comprising:
- receiving an optical signal at an optical equalizer;
- equalizing a spectral shape of a signal of each channel of the optical signal by adjusting a frequency strength of each channel based on optical filtering effects caused by a first wavelength selective switch to mitigate the optical filtering effects and reduce noise degradation of the optical equalizer, the equalizing producing an equalized optical signal;
- and
- transmitting the equalized optical signal to a sole input of the first wavelength selective switch.
1 more element
A reconfigurable optical add-drop multiplexer comprising:
- a first wavelength selective switch having an input;
- and
- an optical equalizer, coupled to the input of the first wavelength selective switch, to equalize a spectral shape of a signal of each channel of an optical signal by adjusting a frequency strength of each channel based on optical filtering effects caused by the first wavelength selective switch to mitigate the optical filtering effects and reduce noise degradation of the optical equalizer.
A method comprising:
- receiving an optical signal at an optical equalizer from a wavelength routing device;
- equalizing a spectral shape of a signal of each channel of the optical signal by adjusting a frequency strength of each channel based on optical filtering effects caused by a first wavelength selective switch to mitigate the optical filtering effects and reduce noise degradation of the optical equalizer, the equalizing producing an equalized optical signal;
- and
- transmitting the equalized optical signal to a sole input of the first wavelength selective switch.
1 more element
Dependencies are inferred from the claim text.