Patent ID: 9531472
Filing Date: 2016-12-27
CPC Classification: H04B,H04Q

Claim Text:
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.