Open AccessDesign and demonstration of temporal cloaks with and without the time gap
Author(s) -
Kedi Wu,
Guo Ping Wang
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.000238
Subject(s) - fourier transform , optics , cloak , computer science , transformation optics , invariant (physics) , metamaterial , time domain , fourier analysis , transformation (genetics) , transfer function , linear filter , lti system theory , physics , filter (signal processing) , computer vision , linear system , mathematics , mathematical analysis , biochemistry , chemistry , quantum mechanics , mathematical physics , gene , electrical engineering , engineering
We introduce a Fourier analysis method to design temporal cloaks for hiding events in time domain. The cloaks are constructed with two linear time-invariant filters with different transfer functions, which can create a temporal gap and then closed it orderly, making any events occurring during the gap not detectable outside. We further reveal that even a no-gap temporal cloak can also hide events. All the analytical results are verified by fast Fourier transformation simulations.