Higher extinction ratio circular polarizers with hetero-structured double-helical metamaterials
نویسندگان
چکیده
منابع مشابه
Twisted optical metamaterials for planarized ultrathin broadband circular polarizers.
Optical metamaterials are usually based on planarized, complex-shaped, resonant nano-inclusions. Three-dimensional geometries may provide a wider set of functionalities, including broadband chirality to manipulate circular polarization at the nanoscale, but their fabrication becomes challenging as their dimensions get smaller. Here we introduce a new paradigm for the realization of optical meta...
متن کاملHigh extinction ratio D-shaped fiber polarizers coated by a double graphene/PMMA stack.
We demonstrate theoretically and experimentally a high extinction ratio and compact size TE-pass polarizer made by a D-shaped fiber coated with a double graphene/PMMA stack. The light propagating in the core of the fiber can be efficiently coupled into the graphene sheet thanks to the giant enhancement of the modal evanescent field associated with the high refractive index graphene/PMMA claddin...
متن کاملOphthalmic applications of circular polarizers.
Circular polarizing filters have recently been introduced in several ophthalmic applications. These applications include clinical instruments for ophthalmoscopy, slit-lamp specular microscopy, and fundus photography, as well as consumer products such as 3-D movie projection and viewing systems and glare-control screens for computer visual display terminals. The nature of circularly polarized li...
متن کاملImplementation of dispersion-free slow acoustic wave propagation and phase engineering with helical-structured metamaterials
The ability to slow down wave propagation in materials has attracted significant research interest. A successful solution will give rise to manageable enhanced wave-matter interaction, freewheeling phase engineering and spatial compression of wave signals. The existing methods are typically associated with constructing dispersive materials or structures with local resonators, thus resulting in ...
متن کاملHigh Extinction, Broadband, and Low Loss Planar Waveguide Polarizers
A technique for making high extinction and broadband polarizers in a low loss planar waveguide platform is presented and characterized. Extinction greater than 78 dB is obtained with low loss for the desired polarization. OCIS codes: (130.0130) Integrated Optics; (130.5440) Polarization-selective devices; (230.7390) Waveguides, planar.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Optics Express
سال: 2011
ISSN: 1094-4087
DOI: 10.1364/oe.19.010886