Search
Now showing items 1-10 of 14
Photonic Crystal Spatial Filters fabricated by Physical Vapour Deposition
(Institute of Electrical and Electronics Engineers Inc., 2019-06)
The idea of the angular, or equivalently - spatial, filtering by photonic crystals (PhCs) is based on a selective diffraction of the light propagating through the double-periodic photonic structure. The angular components ...
Partial cloaking by graded index photonic crystals
(SPIE, 2014-04)
Since the first proposal of the idea of optical cloaking, huge research effort has been spent to implement hiding objects. We propose a broad band all-dielectric partial (unidirectional) cloaking device that hides arbitrary ...
Compact rainbow trapping and demultiplexing by photonic crystal waveguides
(Institute of Electrical and Electronics Engineers Inc., 2014)
Graded Index Photonic Crystals (GRIN PhCs) are artificial periodic materials that possess gradually varying effective refractive indices. GRIN profiles can be formed by adjusting the radii or the locations of PhC unit ...
Broadband one way propagation via dielectric waveguides with unequal effective index
(Institute of Electrical and Electronics Engineers Inc., 2014-12)
We present an efficient approach for broad band one way propagation of light by parallel and unequal dielectric waveguides leading different effective phase shifts. Three dimensional numerical simulations show that 30% ...
Enhanced sub-wavelength focusing by tilted and modified graded index medium
(Institute of Electrical and Electronics Engineers Inc., 2014)
The inhomogeneous variation of index distribution as graded index (GRIN) medium focuses light without the curved surfaces. In the current study, we investigate enhanced focusing properties of GRIN medium with tilted front ...
Non-diffraction bloch modes in low-symmetric photonic crystals
(OSA - The Optical Society, 2017)
[No abstract available]
Design of flat lens-like graded index medium by photonic crystals: Exploring both low and high frequency regimes
(Elsevier, 2015-03)
In this manuscript, we propose the design of an inhomogeneous artificially created graded index (GRIN) medium to enrich the optical device functionalities of light by using periodic all-dielectric materials. Continuous ...
Polarization splitting phenomenon of photonic crystals constructed by two-fold rotationally symmetric unit-cells
(Institute Of Physics Publishing, 2017-08)
We present an intrinsic polarization splitting characteristic of low-symmetric photonic crystals (PCs) formed by unit-cells with C 2rotational symmetry. This behavior emerges from the polarization sensitive self-collimation ...
Large bandwidth mode order converter by differential waveguides
(Optical Society Of American (OSA), 2015-2)
In this article, we propose a large bandwidth mode-order converter design by dielectric waveguides with equal lengths but different cross-sectional areas. The efficient conversion between even and odd modes is verified by ...
Theoretical and experimental investigations of efficient light coupling with spatially varied all dielectric striped waveguides
(American Institute Of Physics Inc., 2017-07)
Integrated photonic systems require efficient, compact, and broadband solutions for strong light coupling into and out of optical waveguides. The present work investigates an efficient optical power transferring the problem ...
