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Title: Polarization-Independent Broadband Bidirectional Optical Cloaking Using a New Type of Inverse Scattering Approach
Authors: Hayran, Zeki
Herrero, Ramon
Botey, Muriel
Kurt, Hamza
Staliunas, Kestutis
Keywords: scattering theory
optical cloaking
scattering cancellation
graded-index optics
Issue Date: 2017
Publisher: IEEE
Source: 19th International Conference on Transparent Optical Networks (ICTON) -- JUL 02-06, 2017 -- Girona, SPAIN
Series/Report no.: International Conference on Transparent Optical Networks-ICTON
Abstract: Since the advent of transformation optics a decade ago [1], the ability to achieve optical cloaking has become a matter of practical realization. However, so far extreme material requirements and large device areas have significantly posed an obstacle to realize compact cloaking schemes that are fully functional. Here, by taking a different approach and by following our recently developed general theorem to control the scattering behaviour of an arbitrary object on a specific demand [2], we show that nearly perfect bidirectional optical cloaking effect can be generated for any type of object with a given shape and size. Contrary to previous approaches, we reveal that such a method is always able to produce local refractive indices larger than one and that neither gain nor lossy materials are required. Furthermore, by means of numerical calculations, we demonstrate a highly tunable broad operational bandwidth of 550 nm (covering 650-1200 nm interval) and an angular aperture of 36 degrees for both directions and polarizations. With these unprecedented features, we expect that the present work will hold a great potential to enable a new class of optical cloaking structures that will find applications particularly in communication systems, defence industry and in other related fields.
ISBN: 978-1-5386-0859-3
ISSN: 2162-7339
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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