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
High sensitivity photonic crystal pressure sensor
D. Biallo,M. De Sario,Antonella D'Orazio,Valeria Marrocco,Vincenzo Petruzzelli,Maria Antonietta Vincenti,Francesco Prudenzano,Tiziana Stomeo,Marco Grande,G. Visimberga,R. Cingolani,M. De Vittorio +11 more
TL;DR: In this paper, a two-dimensional photonic crystal microcavity coupled with a waveguide is proposed to realize a high sensitive force sensor, designed on a GaAs membrane, and a theoretical model is developed to evaluate the change of the refractive index induced by the application of the force onto a sensing surface.
Proceedings ArticleDOI
Self-referenced silicon nitride array microring biosensor for toxin detection using glycans at visible wavelength
Farshid Ghasemi,Ali A. Eftekhar,David S. Gottfried,Xuezheng Song,Richard D. Cummings,Ali Adibi +5 more
TL;DR: In this article, the authors report on application of on-chip referencing to improve the limit-of-detection (LOD) in compact silicon nitride (SiN) microring arrays.
Journal ArticleDOI
On-Chip Biological and Chemical Sensing With Reversed Fano Lineshape Enabled by Embedded Microring Resonators
Xiaoyan Zhou,Lin Zhang,Andrea M. Armani,Daihua Zhang,Xuexin Duan,Jing Liu,Hao Zhang,Wei Pang +7 more
TL;DR: In this article, coupled optical resonators (sometimes termed photonic molecules) in an embedded configuration can significantly enhance the sensitivity and limit of detection (LOD) of on-chip sensors by producing a reversed Fano effect.
Journal ArticleDOI
Light coupling and distribution for Si3N4/SiO2 integrated multichannel single-mode sensing system
Andrzej Kaźmierczak,Fabian Dortu,Olivier Schrevens,Domenico Giannone,Laurent Vivien,Delphine Marris-Morini,David Bouville,Eric Cassan,Kristinn B. Gylfason,Hans Sohlström,Benito Sanchez,Amadeu Griol,Daniel Hill +12 more
TL;DR: In this paper, an efficient and highly alignment-tolerant light coupling and distribution system for a multichannel Si3N4/SiO2 single-mode photonics sensing chip is presented.
Journal ArticleDOI
Surface modes in two-dimensional photonic crystal slabs with a flat dielectric margin
TL;DR: This work designs a 4-port 3-channel bidirectional coupler using a conventional dielectric waveguide side coupled to the multimode surface waveguide and verifies the surface mode dispersion curves by using spatial Fourier transform of the mode field patterns.
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.