Results 31 to 40 of about 1,124,267 (228)

Tunable optical properties of silicon-on-insulator photonic crystal slab structures [PDF]

open access: yesJournal 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

Four-port coupled channel-guide device based on 2D photonic crystal structure [PDF]

open access: yes, 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

Cherenkov Emission Generated by a Modulated Source in 2D Dispersive Photonic Crystal Slabs

open access: yesAdvances 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

Slotted photonic crystal sensors [PDF]

open access: yes, 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

Two-dimensionally confined topological edge states in photonic crystals

open access: yesNew Journal of Physics, 2016
We present an all-dielectric photonic crystal structure that supports two-dimensionally confined helical topological edge states. The topological properties of the system are controlled by the crystal parameters.
Sabyasachi Barik   +4 more
doaj   +1 more source

Deeply subwavelength phonon-polaritonic crystal made of a van der Waals material

open access: yesNature Communications, 2019
Photonic crystals can steer, shape, and sculpture the flow of photons. Here, the author fabricate a deep-subwavelength photonic crystal slab that supports ultra-confined phonon polaritons, by patterning a nanoscale hole array in h-BN.
F. J. Alfaro-Mozaz   +9 more
doaj   +1 more source

High Purcell factor photonic crystal cavities for single photon sources [PDF]

open access: yes, 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

High coupling efficiency to a low dispersion slow light-supporting photonic crystal waveguide [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2013
In this paper, we design a waveguide on photonic crystal slab for propagation of low-dispersion slow light. By shifting the air holes adjacent to the waveguide, we obtain a photonic crystal waveguide with a group index of 25 in 25 nm bandwidth which ...
Moghaddam M. Khatibi   +2 more
doaj   +1 more source

A 1064 nm Deep-Etched Wide-Ridge Waveguide Slab-Coupled Photonic Crystal Semiconductor Laser

open access: yesPhotonics
Semiconductor lasers are key devices in optical communication, optical storage and other fields. Achieving single-mode, high-power and high-beam-quality output is an important research goal in laser technology. Conventional slab-coupled optical waveguide
Jianxin Zhang   +8 more
doaj   +1 more source

Design and analysis of a 2D photonic crystal based parallelogram-shaped cavity with open corners for optical switching [PDF]

open access: yesEPJ Web of Conferences
In this paper, we designed a 2×2 optical switch using a two- dimensional photonic crystal (2D PC) based on interference principle. For the first time, an air-hole slab-structure-based photonic switch is proposed.
Sreevani N.R.G.   +2 more
doaj   +1 more source

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