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
Tailoring mode splitting and degeneracy in silicon triply resonant nanobeam cavities
Xin Cui,Weiwei Zhang,Jianhao Zhang,Xavier Le Roux,Carlos Alonso-Ramos,Laurent Vivien,Jian-Jun He,Eric Cassan +7 more
TL;DR: In this article, the authors investigated the use of coupled silicon nanobeam cavities for achieving multiple resonances as a photonic dedicated platform for nonlinear signal processing and sensing.
Proceedings ArticleDOI
Silicon photonic bandgap biosensors
TL;DR: In this paper, the authors describe how 1-D and 2-D photonic bandgap (PBG) devices can be used for sensing biological matter, from small DNA segments to larger proteins, using the tunability of silicon PBGs upon binding of the desired target on the internal surface of the air holes.
Book ChapterDOI
Photonic Crystal Waveguides and Filters
TL;DR: In this paper, the current state of silicon-based photonic crystal waveguides, photonic-crystal cavities, and photonic dispersive filters is discussed starting from the basic mode properties, different aspects of design and optimization of these photonic crystals devices for different applications are briefly surveyed.
Journal ArticleDOI
NOEMS Based Slotted Photonic Crystal Cavity for the Sensing of Force
Partha Saha,Mrinal K. Sen +1 more
TL;DR: In this article, a two dimensional slotted photonic crystal cavity (2D-SPCC) has been designed and optimized for the application of sensing in a silicon cantilever to form a nano-optoelectro-mechanical system (NOEMS) for sensing the physical parameters like force, displacement and strain.
Journal ArticleDOI
Integrated optical bimodal waveguide biosensors: Principles and applications
TL;DR: In this article , the authors provide an overview of the state-of-the-art integrated optical BiMW biosensors from the theoretical fundamentals to their practical implementation, and explore recent advances such as novel designs, integration in specific LOC systems and its application in real biosensing scenarios.
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.