Coherent waveform conversion in optical networks

摘要

A method for wavelength conversion comprising receiving an input optical signal with a first wavelength, converting the input optical signal to a plurality of input analog signals, generating a plurality of digital signals based on the input analog signals, compensating for waveform distortions by at least filtering one or more of the digital signals to generate one or more compensated digital signals, converting the compensated digital signals to output analog signals via digital-to-analog (DA) conversion, generating an output optical signal with a second wavelength different from the first wavelength based on the output analog signals, and transmitting the output optical signal.

主权项

1. A method for wavelength conversion comprising:
receiving an input optical signal with a first wavelength; converting the input optical signal to a plurality of input analog signals; filtering the input analog signals using a first filtering function to generate a plurality of filtered input analog signals; generating a plurality of digital signals based on the filtered input analog signals; filtering the digital signals using a second filtering function to generate compensated digital signals and to compensate for waveform distortions; converting the compensated digital signals to output analog signals via digital-to-analog (DA) conversion; filtering the output analog signals using a third filtering function to generate a plurality of filtered output analog signals, wherein the second filtering function performs substantially an inverse of the first filtering function and the third filtering function; generating an output optical signal with a second wavelength based on the filtered output analog signals; and transmitting the output optical signal.