Heterogeneous material integration with photonic crystal platforms for nanophotonic devices on foreign substrates

AbstractWe report a novel tunable nanophotonic device concept based on Mechanically Controlled Photonic Crystal (MCPC), which is comprised of a periodic array of high index dielectric material and a low index polymer. Tunability is achieved by applying mechanical force with nano-/micro-electron-mechanical system actuators. The mechanical stress induces changes in the periodicity of the photonic crystal, to which the photonic band structure is extremely sensitive. This consequently produces tunability much greater than that achievable by electro-optic materials such as liquid crystal. Our theoretical investigations revealed that we could achieve dynamic beam steering over a wide range of angles up to 75° with only 10% mechanical stretching. We also predicted tunable sub-wavelength imaging in which we could tune the frequency response and focal length of negative index PC lens. For experimental demonstration, we fabricated the PC structures on Si-on-insulator substrates. Optical characterizations clearly showed the anticipated negative refraction in which the incident beam was refracted back to the side it was incident. The experimental demonstration of negative refraction at optical frequencies in a Si-based photonic crystal structure is a significant step toward the next-generation nanophotonics.

Download Full-text

Dispersion Engineering for Multifunctional Photonic Crystal Based Nanophotonic Devices at Infrared Wavelengths

Journal of Nanomedicine & Nanotechnology ◽

10.4172/2157-7439.1000185 ◽

2013 ◽

Vol 04 (06) ◽

Cited By ~ 1

Author(s):

M. Hofman G. Scherrer

Keyword(s):

Photonic Crystal ◽

Dispersion Engineering ◽

Nanophotonic Devices ◽

Infrared Wavelengths

Download Full-text

Enhanced Artificial Intelligent Method for Representing the Photonic Crystal Fiber Profile Index

Al-Kitab Journal for Pure Sciences ◽

10.32441/kjps.v1i1.87 ◽

2018 ◽

Vol 1 (1) ◽

pp. 2-19

Author(s):

Mahmood Sh. Majeed ◽

Raid W. Daoud

Keyword(s):

Genetic Algorithms ◽

Photonic Crystal ◽

Photonic Crystal Fiber ◽

New Method ◽

Proper Solution ◽

Artificial Intelligent ◽

Crystal Fiber ◽

Fitness Value ◽

First Pass ◽

Crossover And Mutation

A new method proposed in this paper to compute the fitness in Genetic Algorithms (GAs). In this new method the number of regions, which assigned for the population, divides the time. The fitness computation here differ from the previous methods, by compute it for each portion of the population as first pass, then the second pass begin to compute the fitness for population that lye in the portion which have bigger fitness value. The crossover and mutation and other GAs operator will do its work only for biggest fitness portion of the population. In this method, we can get a suitable and accurate group of proper solution for indexed profile of the photonic crystal fiber (PCF).

Download Full-text

Modulation Dynamics For QD Laser On Photonic Crystal

Journal of College of Education for Pure Science ◽

10.32792/utq.jceps.08.03.15 ◽

2018 ◽

Vol 8 (3) ◽

pp. 172-188

Author(s):

M. Abdulmahdi ◽

S. Sarsooh ◽

M. Oleiwi

Keyword(s):

Photonic Crystal

Download Full-text

Dynamic control of photonic crystal nanocavities for photon manipulation

IEICE Proceeding Series ◽

10.15248/proc.1.356 ◽

2014 ◽

Vol 1 ◽

pp. 356-359

Author(s):

Yoshinori Tanaka ◽

Takashi Asano ◽

Susumu Noda

Keyword(s):

Photonic Crystal ◽

Dynamic Control

Download Full-text

CROSS-OVER DESIGNS IN THE BIOASSAY OF CORTICOTROPHIN

Acta Endocrinologica ◽

10.1530/acta.0.xxxiii0552 ◽

1960 ◽

Vol XXXIII (IV) ◽

pp. 552-558 ◽

Cited By ~ 1

Author(s):

Jørn Lyng

Keyword(s):

Heterogeneous Material ◽

Adrenal Tissue

ABSTRACT The relevant data from 28 subcutaneous triplet cross-over assays of corticotrophin are given. The possible advantage of a twin cross-over design for the »in vitro« standardization of corticotrophin has been investigated, and it is concluded, that when the randomization of the adrenal tissue has been properly performed, there will be no advantage in this design. An attempt has been made to do an »in vitro« cross-over assay of corticotrophin without mixing the glands. The efficiency of the design is shown, but it is concluded that it is not effective enough to eliminate the effect of the highly heterogeneous material.

Download Full-text