Abstract:
:Invisibility cloak capable of hiding an object can be achieved by properly manipulating electromagnetic field. Such a remarkable ability has been shown in transformation and ray optics. Alternatively, it may be realistic to create a spatial cloak by means of confining electromagnetic field in three-dimensional arrayed waveguides and introducing appropriate collective curvature surrounding an object. We realize the artificial structure in borosilicate by femtosecond laser direct writing, where we prototype up to 5,000 waveguides to conceal millimeter-scale volume. We characterize the performance of the cloak by normalized cross correlation, tomography analysis and continuous three-dimensional viewing angle scan. Our results show invisibility cloak can be achieved in waveguide optics. Furthermore, directly printed invisibility cloak on a photonic chip may enable controllable study and novel applications in classical and quantum integrated photonics, such as invisualising a coupling or swapping operation with on-chip circuits of their own.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Feng Z,Wu BH,Zhao YX,Gao J,Qiao LF,Yang AL,Lin XF,Jin XMdoi
10.1038/srep28527subject
Has Abstractpub_date
2016-06-22 00:00:00pages
28527issn
2045-2322pii
srep28527journal_volume
6pub_type
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