Fig. 1

Schematic and representative of field-programmable silicon temporal cloak. a The probe light waveform at the event plane of the traditional temporal cloak. b The probe light waveform at the event plane in our cloaking scheme, featuring a large cloaking window (~3 ns) and the cloaking window can be field-programming freely. c Schematic of field-programmable silicon temporal cloak. d-j represent various points in the circuit and the characteristic curves corresponding to the probe light, electrical control signal and event are as follows: (d) the probe light is continuous wave; (e) optical frequency comb generator creates a broadband flat optical frequency comb; (f) an ET-MRR driven by an electrical split sawtooth signal and DC signal; (g) the output of drop-port of ET-MRR is split linearly chirped optical signal or monochromatic light, which is required for field-programmable temporal cloak; (h) opening gap is achieved while the ET-MRR is driven by a split sawtooth waveform (cloak on), and temporal gap does not open while the ET-MRR is driven by a DC signal (cloak off); (i) event (dark RZ); (j) the output waveform is CW (cloak on) or inverted pulse (cloak off). Inset: the microscope images of the fabricated ET-MRR and the zoom-in ring region. The gray labels represent the cloaking bits