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
Coupling of Photonic Crystal Surface Modes
TL;DR: Guiding and evanescent coupling properties of surface modes bound to the interfaces of two-dimensional photonic crystals in close proximity are numerically demonstrated in this paper , where surface modes are identified through supercell band structure computations, while their excitation by the electromagnetic waves through a perpendicular insertion waveguide is demonstrated using finite-difference time-domain simulations.
Proceedings ArticleDOI
Silicon micromachined photonic crystal integrated in an opto-fluidic microsystem
TL;DR: In this article, a closed-loop opto-fluidic microsystem integrating both optical and fluidic functionalities on the same chip is reported, which consists of an electrochemically micromachined silicon substrate, on which high-order vertical silicon/air one dimensional photonic crystals (1D PhCs) were integrated together with fluidic microchannels, bonded to a glass cover, the latter provided with inlet/outlet holes for liquid injection/extraction in/out the PhCs air gaps.
Proceedings ArticleDOI
Defect-assisted plasmonic sensing
TL;DR: In this article, a plasmonic nanosensor was proposed which combines extraordinary optical transmission and resonance within structural defects in a polycrystalline polygonal plasmoronic crystal.
Dissertation
Design and Performance Analysis of Photonic Crystal Waveguide for Bio – Chemical Sensing Applications
Abstract: ........................................................................................................ iii LIST OF SCI PUBLICATIONS............................................................................... v LIST OF FIGURES.............................................................................................. vi LIST OF TABLES................................................................................................ viii LIST OF ACRONYMS........................................................................................... ix CHAPTER
Proceedings ArticleDOI
Photonic crystal microcavity coupled to a waveguide: An integrated system full of physics
Sylvain Combrié,E. Weidner,A. De Rossi,Q. N. Tran,Simone Cassette,Anne Talneau,Henri Benisty +6 more
TL;DR: In this paper, a membrane photonic crystal cavity coupled to a waveguide is fabricated and characterised, and the Fabry-Perot method is used to measure propagation losses.
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.