Extended temporal cloak based on the inverse temporal Talbot effect.

A temporal cloak with a significantly extended cloaking window and spatial distribution is created using the inverse temporal Talbot effect. The continuously cloaking window and the total cloaking ratio are 196 ps and 74%, respectively, which are 5.4 and 1.6 times larger than the previous record. Moreover, the cloak is maintained over 5-km of dispersion-compensating fiber (DCF), which enables cloaking temporal events at multiple positions simultaneously. To demonstrate the cloaking performance, both message-encoded and pseudo-random temporal events are successfully concealed. Last, but not least, since our configuration does not require opposite sign of dispersion, the idea can be applied analogously to the spatial domain according to the space-time duality, thus also enriching the spatial cloaking technique.

[1]  G. Bartal,et al.  An optical cloak made of dielectrics. , 2009, Nature materials.

[2]  Joseph M. Lukens,et al.  A temporal cloak at telecommunication data rate , 2013, Nature.

[3]  Jorge Ojeda-Castaneda,et al.  Irradiance at Fresnel planes of a phase grating , 1992 .

[4]  José Azaña,et al.  On the generality of the Talbot condition for inducing self-imaging effects on periodic objects. , 2016, Optics letters.

[5]  Reza Salem,et al.  Application of space–time duality to ultrahigh-speed optical signal processing , 2013 .

[6]  X. Zhang,et al.  Dielectric Optical Cloak , 2009, 0904.3602.

[7]  M. McCall,et al.  A spacetime cloak, or a history editor , 2011 .

[8]  N. Engheta,et al.  Achieving transparency with plasmonic and metamaterial coatings. , 2005, Physical review. E, Statistical, nonlinear, and soft matter physics.

[9]  David R. Smith,et al.  Metamaterial Electromagnetic Cloak at Microwave Frequencies , 2006, Science.

[10]  David R. Smith,et al.  Controlling Electromagnetic Fields , 2006, Science.

[11]  J. P. Guigay,et al.  On Fresnel Diffraction by One-dimensional Periodic Objects, with Application to Structure Determination of Phase Objects , 1971 .

[12]  J. Pendry,et al.  Hiding under the carpet: a new strategy for cloaking. , 2008, Physical review letters.

[13]  I. Chremmos.  Temporal cloaking with accelerating wave packets. , 2014, Optics letters.

[14]  Jianming Wen,et al.  The Talbot effect: recent advances in classical optics, nonlinear optics, and quantum optics , 2013 .

[15]  A. Kildishev,et al.  Anisotropic metamaterials emulated by tapered waveguides: application to optical cloaking. , 2009, Physical review letters.

[16]  J. Azaña,et al.  Temporal self-imaging effects: theory and application for multiplying pulse repetition rates , 2001 .

[17]  B. Kolner,et al.  Principles of parametric temporal imaging. I. System configurations , 2000, IEEE Journal of Quantum Electronics.

[18]  B. Kolner.  Space-time duality and the theory of temporal imaging , 1994 .

[19]  José Azaña,et al.  General temporal self-imaging phenomena , 2003 .

[20]  J. Azaña,et al.  Noiseless intensity amplification of repetitive signals by coherent addition using the temporal Talbot effect , 2014, Nature Communications.

[21]  Joseph M. Lukens,et al.  Temporal cloaking for data suppression and retrieval , 2014 .

[22]  A. Gaeta,et al.  Demonstration of temporal cloaking , 2011, Nature.