Results 1 to 10 of about 5,685 (115)
Subwavelength-Grating Metamaterial Structures for Silicon Photonic Devices [PDF]
Proceedings of the IEEE, 2018 Segmenting silicon waveguides at the subwave-length scale produce an equivalent homogenous material. The geometry of the waveguide segments provides precise control over modal confinement, effective index, dispersion and birefringence, thereby opening up new approaches to design devices with unprecedented performance.
Alejandro Ortega-Moñux +2 more
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Optica, 2017 Femtosecond laser-induced periodic subwavelength and deep-subwavelength structures (SWS; DSWS) have attracted attention due to their subdiffraction resolution of surface and inner volume patterning. Understanding of the richness of laser–matter interaction during formation of SWS and DSWS is another quest which can help to find control for nanoscale ...
Lei Wang, Qi-Dai Chen, Hong-Bo Sun
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[INVITED] Subwavelength structures for silicon photonics biosensing
Optics and Laser Technology, 2019 Silicon photonic biosensors hold the potential for highly accurate, yet low cost point-of-care devices. Maximizing the sensitivity of the sensing chips while reducing the complexity and cost of the read-out system is pivotal to realize this potential. Here we present an extensive analysis, both from a practical and a theoretical perspective, of current
Jonas Leuermann +2 more
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Designing Anisotropy with Waveguide Subwavelength Structures [PDF]
2018 20th International Conference on Transparent Optical Networks (ICTON), 2018 Ministerio de Economía y Competitividad, Programa Estatal de Investigación, Desarrollo e Innovación Orientada a los Retos de la Sociedad (cofinanciado FEDER), Proyectos TEC2016-80718-R, TEC2015-71127-C2-1-R (FPI scholarship BES-2016-077798), and IJCI-2016-30484, the Community of Madrid (S2013/MIT-2790), the Universidad de Málaga.
Robert Halir +8 more
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Subwavelength structures for taper waveguides
Journal of Physics: Conference Series, 2022 Abstract In Photonic Integrated Circuits (PICs) it is often necessary some sort of mismatch adaptation between waveguides of different cross-sections. There are several instances of such a designing constraint, being the vertical coupling between the PIC and an optical fibre probably the most representative of all examples.
Lourenço, Paulo +4 more
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Subwavelength structured surfaces and their applications [PDF]
SPIE Proceedings, 1993 Subwavelength structured surfaces have a multitude of applications. These include antireflection suppression, fabrication of polarization components, narrowband filters, and phase plates. All of these applications offer advantages over conventional components.
Daniel H. Raguin +2 more
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Single-Cycle Gap Soliton in a Subwavelength Structure [PDF]
Physical Review Letters, 2010 We demonstrate that a single sub-cycle optical pulse can be generated when a pulse with a few optical cycles penetrates through resonant two-level dense media with a subwavelength structure. The single-cycle gap soliton phenomenon in the full Maxwell-Bloch equations without the frame of slowly varying envelope and rotating wave approximations is ...
Xie, X., Macovei, M.
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Compressive Imaging of Subwavelength Structures [PDF]
SIAM Journal on Imaging Sciences, 2009 The problem of imaging extended targets (sources or scatterers) is formulated in the framework of compressed sensing with emphasis on subwavelength resolution. The proposed formulation of the problems of inverse source/scattering is essentially exact and leads to the random partial Fourier measurement matrix.
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Polarization quadrature measurement of subwavelength diffracting structures [PDF]
Applied Optics, 1997 The amplitude and the phase of the diffracted far field depends on polarization when the diffracting structure is comparable to or less than the wavelength. When the far-field amplitude and the phase of one polarization with respect to the orthogonal polarization is measured, small changes in the structure can be measured.
Marx, D. S., Psaltis, D.
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Microcavities with suspended subwavelength structured mirrors
Optics express, 2018 We investigate the optical properties of microcavities with suspended subwavelength structured mirrors, such as high-contrast gratings or two-dimensional photonic crystals slabs, and focus in particular on the regime in which the microcavity free-spectral range is larger than the width of a Fano resonance of the highly reflecting structured mirror.
Næsby, Andreas, Dantan, Aurelien Romain
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