Phase retrieval in holographic data storage by expanded spectrum combined with dynamic sampling method is proposed, which serves to both reduce media consumption and to shorten the iterative number of ...

When electrical engineers hear the name "Nyquist," they think of what Harry Nyquist is best known for: his Sampling Theorem. Evidence of its importance is everywhere. Products like cell phones, audio ...

Nyquist pulse generation underpins modern high-speed optical communications by producing sinc-shaped waveforms that occupy the minimum spectral bandwidth for a given data rate. These pulses, ...