Journal ArticleDOI
Ultracompact biochemical sensor built with two-dimensional photonic crystal microcavity.
Reads0
Chats0
TLDR
By measuring the resonant wavelength of a two-dimensional photonic crystal microcavity, a time-resolved sensing capability is demonstrated that can detect the change in refractive index of 0.002.Abstract:
We report an experimental demonstration of an ultracompact biochemical sensor based on a two-dimensional photonic crystal microcavity. The microcavity, fabricated on a silicon-on-insulator substrate, is designed to have a resonant wavelength (λ) near 1.5 µm. The transmission spectrum of the sensor is measured with different ambient refractive indices ranging from n=1.0 to n=1.5. From observation of the shift in resonant wavelength, a change in ambient refractive index of Δn=0.002 is readily apparent. The correspondence between absolute refractive index and resonant wavelength agrees with numerical calculation to within 4% accuracy. The evaporation of water in a 5% glycerol mixture is also used to demonstrate the capability for in situ time-resolved sensing.read more
Citations
More filters
Journal ArticleDOI
Trilayered Gires–Tournois Resonator with Ultrasensitive Slow-Light Condition for Colorimetric Detection of Bioparticles
TL;DR: In this paper , a trilayered Gires-Tournois (GT) resonator was proposed to detect low refractive index (RI) bioparticles from the background with spatially distinct color differences.
Journal ArticleDOI
A PhC-SOA based cancerous cell detection biosensor
Sajjad Moshfe,Mahtab Zarei +1 more
TL;DR: In this paper , an ultra-small photonic integrated biosensor was proposed to detect cancerous cells based on self-phase modulation in PhC-SOA, inducing a frequency shift on a pulse traveling through the device.
Proceedings ArticleDOI
Enhanced transduction of polymer photonic crystal band-edge lasers via additional layer deposition
Cameron L. C. Smith,Mads Brøkner Christiansen,Thomas Buss,Anders Kristensen,Claus Helix Nielsen,Niels Bent Larsen +5 more
TL;DR: In this paper, the concept of enhanced transduction for polymer photonic crystal lasers by deposition of an additional polymer layer with selective gas response was presented, and a significant increase in sensitivity to changes in gas concentration was reported.
Proceedings ArticleDOI
Photonic crystal based nano-displacement sensor
TL;DR: In this article, a photonic crystal based nano-displacement sensor for horizontal as well as vertical displacement has been proposed, which is highly sensitive in the displacement region 40nm120nm with sensitivity 0.00466 nm -1 for 40nm horizontal displacem ent.
Posted Content
Photonic Crystals Engineering For Light Manipulation: Low Symmetry, Graded Index and Parity Time Symmetry
TL;DR: In this paper, the authors proposed gain-loss modulated parity-time (PT-) symmetric photonic structures to obtain strong asymmetric light transmission close to the crystallographic resonances or, equivalently, close to high-symmetry points.
References
More filters
Book
CRC Handbook of Chemistry and Physics
TL;DR: CRC handbook of chemistry and physics, CRC Handbook of Chemistry and Physics, CRC handbook as discussed by the authors, CRC Handbook for Chemistry and Physiology, CRC Handbook for Physics,
Journal ArticleDOI
Block-iterative frequency-domain methods for Maxwell’s equations in a planewave basis
TL;DR: A fully-vectorial, three-dimensional algorithm to compute the definite-frequency eigenstates of Maxwell's equations in arbitrary periodic dielectric structures, including systems with anisotropy or magnetic materials, using preconditioned block-iterative eigensolvers in a planewave basis is described.
Journal ArticleDOI
A Porous Silicon-Based Optical Interferometric Biosensor
Victor Lin,Kianoush Motesharei,Kianoush Motesharei,Keiki-Pua S. Dancil,Keiki-Pua S. Dancil,Michael J. Sailor,Michael J. Sailor,M. Reza Ghadiri,M. Reza Ghadiri +8 more
TL;DR: A biosensor has been developed based on induced wavelength shifts in the Fabry-Perot fringes in the visible-light reflection spectrum of appropriately derivatized thin films of porous silicon semiconductors based on Binding of molecules induced changes in the refractive index of the porous silicon.
Journal ArticleDOI
Linear waveguides in photonic-crystal slabs
TL;DR: In this article, a systematic analysis of waveguides in photonic-crystal slabs is presented, and the considerations that must be applied to achieve single-mode guided bands in these systems are discussed.
Journal ArticleDOI
Principles of biosensing with an extended coupling matrix and surface plasmon resonance
TL;DR: In this paper, the surface plasmon resonance angle shifts are calculated as a function of the amount of organic material in the interaction matrix and the influence of physical parameters, such as matrix thickness and wavelength of the light, on the expected performance is considered.