New Paper: Published in Nature Photonics Journal
A recent paper, Femtojoule femtosecond all-optical switching in lithium niobate nanophotonics, was published in the Nature Photonics journal. In this paper, the Nonlinear Photonics Laboratory at Caltech developed a switch—one of the most fundamental components of computing—using optical, rather than electronic, components. By simultaneous engineering of the dispersion and quasi-phase matching in lithium niobate nanowaveguides, a nonlinear splitter was demonstrated to achieve ultralow switching energies down to 80 fJ, featuring a fastest switching time of ~46 fs and a record low energy–time product of 3.7×10^(-27) J⋅s. The development could aid efforts to achieve ultrafast all-optical signal processing and computing.