title: Beating Nyquist with light: a compressively sampled photonic link.
abstract: We report the successful demonstration of a compressively sampled photonic link. The system takes advantage of recent theoretical developments in compressive sampling to enable signal recovery beyond the Nyquist limit of the digitizer. This rather remarkable result requires that (1) the signal being recovered has a sparse (low-dimensional) representation and (2) the digitized samples be incoherent with this representation. We describe an all-photonic system architecture that meets these requirements and then show that 1 GHz harmonic signals can be faithfully reconstructed even when digitizing at 500 MS/s, well below the Nyquist rate.
authors.affiliation: Naval Research Laboratory, Washington, DC 20375, USA. jonathan.nichols@nrl.navy.mil
authors.forename: J M
authors.initials: JM
authors.lastname: Nichols
authors.forename: F
authors.initials: F
authors.lastname: Bucholtz