Results 21 to 30 of about 3,323 (241)
New Journal of Physics, 2021 The polarization beam splitter (PBS) is the essential optical component, which is widely used in various optical instruments. Its robustness against perturbation is very necessary to all-optical classical and quantum networks.
Lu He +4 more
doaj +1 more source
Shifting beams at normal incidence via controlling momentum-space geometric phases
Nature Communications, 2021 Light beams can undergo small shifts due to interesting physical phenomena at interfaces. Here, the authors design a photonic crystal slab that enables a large lateral shift at normal incidence by engineering the light-interface interaction through the ...
Jiajun Wang +7 more
doaj +1 more source
Calculation of losses in 2-D photonic crystal membrane waveguides using the 3-D FDTD method [PDF]
, 2004 The three-dimensional finite-difference time-domain method is used to obtain loss per unit length in a two-dimensional photonic crystal membrane waveguide by simulating three different length guides. Results are shown for propagation both above and below
Cryan, MJ +5 more
core +1 more source
Four-port coupled channel-guide device based on 2D photonic crystal structure [PDF]
, 2004 We have fabricated and measured a four-port coupled channel-waveguide device using W1 channel waveguides oriented along ΓK directions in a two-dimensional (2D) hole-based planar photonic crystal (PhC) based on silicon-on-insulator (SOI) waveguide ...
De La Rue, R M +2 more
core +1 more source
Slotted photonic crystal sensors [PDF]
, 2013 Optical biosensors are increasingly being considered for lab-on-a-chip applications due to their benefits such as small size, biocompatibility, passive behaviour and lack of the need for fluorescent labels.
Mark Scullion +9 more
core +1 more source
Design Aspects in Photonic Crystal –Vertical Cavity Surface- Emitting Lasers Diode [PDF]
Engineering and Technology Journal, 2010 The design issues for a current injection vertical cavity surface-emitting lasers (VCSEL) operating at 1550 nm is presented using photonic crystal (PC) technology.
Thaira Zakaria Al-Tayyar +1 more
doaj +1 more source
High-Q Defect-Free 2D Photonic Crystal Cavity from Random Localised Disorder
Crystals, 2014 We propose a high-Q photonic crystal cavity formed by introducing random disorder to the central region of an otherwise defect-free photonic crystal slab (PhC).
Kelvin Chung +4 more
doaj +1 more source
Tunable optical properties of silicon-on-insulator photonic crystal slab structures [PDF]
Journal of the European Optical Society-Rapid Publications, 2009 A photonic crystal slab structure with one-dimensional periodicity, obtained by preferential etching of a silicon-on-insulator wafer, is numerically investigated in 3-D.
Tasolamprou A. C. +4 more
doaj +1 more source
Cherenkov Emission Generated by a Modulated Source in 2D Dispersive Photonic Crystal Slabs
Advances in Materials Science and Engineering, 2020 This work presents a systematic numerical study of Cherenkov optical radiation generated by a modulated source that moves with uniform velocity on a two-dimensional (2D) photonic crystal (PCr) slab surface.
Erika Martínez-Sánchez +4 more
doaj +1 more source
High Purcell factor photonic crystal cavities for single photon sources [PDF]
, 2006 Enhancement of spontaneous emission is of crucial importance in the design of high efficiency single photon sources. This can be achieved by creating defect cavities with both high Q and small effective mode volume, which results in a high Purcell factor.
Cryan, MJ +4 more
core +1 more source