نتایج جستجو برای: optical devices

تعداد نتایج: 450525  

2008
Shigeki MATSUTANI

In the previous article (Found Phys. Lett. 16 325-341), we showed that a reciprocity of the Gauss sums is connected with the wave and particle complementary. In this article, we revise the previous investigation by considering a relation between the Gauss optics and the Gauss sum based upon the recent studies of the Weil representation for a finite group.

2015
Dandan Wen Fuyong Yue Guixin Li Guoxing Zheng Kinlong Chan Shumei Chen Ming Chen King Fai Li Polis Wing Han Wong Kok Wai Cheah Edwin Yue Bun Pun Shuang Zhang Xianzhong Chen

Metasurfaces are engineered interfaces that contain a thin layer of plasmonic or dielectric nanostructures capable of manipulating light in a desirable manner. Advances in metasurfaces have led to various practical applications ranging from lensing to holography. Metasurface holograms that can be switched by the polarization state of incident light have been demonstrated for achieving polarizat...

Journal: :Optics letters 2010
Chaolong Song Nam-Trung Nguyen Anand Krishna Asundi Say-Hwa Tan

The integration of optical components into microfluidic systems has the potential to reduce the amount of bulky external devices and thus reduce the cost. However, one of the challenges of this concept is the accurate alignment of the optical path among multiple optical components inside a chip. We propose a tunable micro-optofluidic prism based on the liquid-core liquid-cladding structure form...

Journal: :Angewandte Chemie 2010
Alexander Schoedel Camilla Scherb Thomas Bein

Metal–organic frameworks (MOFs) assembled from organic building blocks and metal-based connectors have attracted much interest owing to their large pores and their enormous structural diversity. Particularly, the generation of homogeneous thin films of MOFs is highly desirable in view of potential applications including chemical sensors, catalysts, and also optical devices. Several elegant exam...

Journal: :Optics letters 2006
Carsten Reinhardt Sven Passinger Boris N Chichkov Carsten Marquart Ilya P Radko Sergey I Bozhevolnyi

Fabrication of dielectric optical components for surface plasmon polaritons (SPPs) by two-photon polymerization (2PP) is studied. This direct-write femtosecond laser technology provides a low-cost and flexible method for the fabrication and investigation of plasmonic structures and optical components. Using the 2PP technique, we fabricated narrow dielectric ridges with dimensions as small as 15...

2015
Koji Azuma Kiyoshi Tamaki William J Munro

Recent field demonstrations of quantum key distribution (QKD) networks hold promise for unconditionally secure communication. However, owing to loss in optical fibres, the length of point-to-point links is limited to a hundred kilometers, restricting the QKD networks to intracity. A natural way to expand the QKD network in a secure manner is to connect it to another one in a different city with...

Journal: :Optics letters 2005
Hatice Altug Jelena Vucković

We have experimentally studied polarization properties of the two-dimensional coupled photonic crystal microcavity arrays and observed a strong polarization dependence of the transmission and reflection of light from the structures-effects that can be employed in building miniaturized polarizing optical components. Moreover, by combining these properties with a strong sensitivity of the coupled...

Journal: :Optics express 2008
Alasdair C Hamilton Johannes Courtial

A ray-rotation sheet consists of miniaturized optical components that function--ray optically--as a homogeneous medium that rotates the local direction of transmitted light rays around the sheet normal by an arbitrary angle [A. C. Hamilton et al., arXiv:0809.2646 (2008)]. Here we show that two or more parallel ray-rotation sheets perform imaging between two planes. The image is unscaled and un-...

Journal: :Journal of the Optical Society of America. A, Optics, image science, and vision 2003
T Idé H Mizuta H Numata Y Taira M Suzuki M Noguchi Y Katsu

We have developed a new technique for generating homogeneously distributed irregular dot patterns useful for optical devices and digital halftoning technologies. To introduce irregularity, we use elaborately designed sequences called low-discrepancy sequences instead of pseudorandom numbers. We also use a molecular-dynamics redistribution method to improve the distribution of dots. Our method c...

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