Journal ArticleDOI
Ultracompact biochemical sensor built with two-dimensional photonic crystal microcavity.
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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
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Journal ArticleDOI
Modification of opal photonic crystals using Al2O3 atomic layer deposition
Z. A. Sechrist,Brian T. Schwartz,Jin Hyoung Lee,Jarod A. McCormick,Rafael Piestun,Wounjhang Park,Steven M. George +6 more
TL;DR: Aluminum oxide (Al2O3) atomic layer deposition (ALD) on synthetic opal was explored as a model system to understand the growth of ALD films on photonic crystals as discussed by the authors.
Journal ArticleDOI
High-Q and High-Sensitivity Photonic Crystal Cavity Sensor
TL;DR: In this paper, a high qualityfactor (Q) and high-sensitivity photonic crystal (PhC) cavity sensor on the silicon-on-insulator platform is presented.
Journal ArticleDOI
Optical filter based on two coupled PhC GaAs-membranes.
Tiziana Stomeo,Marco Grande,Gabriele Rainò,Adriana Passaseo,Antonella D'Orazio,Roberto Cingolani,Andrea Locatelli,Daniele Modotto,Costantino De Angelis,Massimo De Vittorio +9 more
TL;DR: The normal-incidence reflectance measurements and the numerical simulation of reflection spectra show a high sensitivity to the geometrical parameters, such as the distance between the slabs, whose control would make the device suitable for a new class of tunable optical filters.
Journal ArticleDOI
Novel Biosensor Based on Photonic Crystal Nano-Ring Resonator
TL;DR: In this article, the feasibility of biosensing for a novel two-dimensional photonic crystal (PC) based nano-ring resonator by computational study was investigated and the sensitivity of various holes has been studied.
Journal ArticleDOI
Photonic crystal devices: some basics and selected topics
TL;DR: The review addresses some of the problems encountered in the fabrication of photonic crystal devices using the planar technologies of integrated photonics, which are those that are most likely to be used in future commercial production.
References
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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.