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
1D photonic crystal with defect for microfluidic applications in near IR and THz spectral ranges
TL;DR: In this paper, the spectral properties of 1D photonic crystal with defect in near IR and THz spectral ranges were studied by computer simulation, and it was shown that photonic crystals with defect can be used for refractive index measurements of liquid analytes.
Proceedings ArticleDOI
High-sensitive refractive index sensor based on slow light engineered photonic crystal cavity
TL;DR: In this article, a high-sensitive refractive index sensor was theoretically demonstrated in a slow light engineered photonic crystal (PhC) cavity, where one pair of two air holes was inserted into a line defected PhC waveguide as two reflectors.
Journal ArticleDOI
Electrically controlled modulation in a photonic crystal nanocavity
Dirk Englund,Bryan Ellis,Elizabeth H. Edwards,Tomas Sarmiento,James S. Harris,David A. B. Miller,Jelena Vuckovic +6 more
TL;DR: In this article, a planar photonic crystal nanocavity whose resonance is electrically controlled is described, where a forward bias applied across a p-i-n diode shifts the cavity into and out of resonance with a continuous-wave laser field in a waveguide.
Proceedings ArticleDOI
Reconfigurable optofluidic silicon-based photonic crystal components
Christian Karnutsch,Uwe Bog,Cameron L. C. Smith,Snjezana Tomljenovic-Hanic,Christian Grillet,Christelle Monat,Liam O'Faolain,Thomas P. White,Thomas F. Krauss,Ross C. McPhedran,Benjamin J. Eggleton +10 more
TL;DR: In this paper, the authors report reconfigurable optofluidic photonic crystal components in silicon-based membranes by controllably filtering and removing fluid from holes of the photonic lattice.
Fast Calculation of Cavity-Mode Characteristics of
Zexuan Qiang,Weidong Zhou +1 more
TL;DR: In this article, a fast approach based on effective index perturba- tion method is proposed to evaluate the intrinsic characteristics of photonic-crystal-slab-based microcavity with two-dimensional finite-difference time-domain (2-D FDTD) technique.
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.