Results 211 to 220 of about 134,221 (268)

Optics and Lighting

1986
In this section we introduce optical systems used in intelligent automation. Further information is available in the many standard books on optics.
Arthur Browne, Leonard Norton-Wayne
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Fiber optic light sensor

Environmental Monitoring and Assessment, 2015
We describe a low-cost fiber optic sensor for measuring photosynthetically active radiation (PAR) in turbulent flow. Existing technology was combined in a novel way for probe development addressing the need for a small but durable instrument for use in flowing water. Optical components including fiber optics and a wide-spectrum light detector were used
Wayne, Chudyk, Kyle F, Flynn
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Transport of Light by Optical Fibers and Light Pipes

2014
The principle of propagation of light rays in a glass cylinder is the base of the technology of optical fibers. The fabrication of an optical fiber requires a coating (fiber cladding), whose refractive index is lower than that of the central part (fiber core).
Francini F, Fontani D, Sansoni P
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Optical tweezers: a light touch

Journal of Microscopy, 2012
SummaryOptical tweezers use focused laser light to manipulate microscopic particles. We discuss the underlying physics of the technique in terms of a gradient force exerted by the light on the particles. The versatility of optical tweezers is highlighted, in particular, we explain how spatial light modulators and various imaging methods have greatly ...
Michael P, Lee, Miles J, Padgett
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Light Scattering in Optical Glass*

Journal of the Optical Society of America, 1948
Raman spectra of two optical glasses (a borosilicate crown and a dense flint glass) have been obtained making use of unpolarized exciting light and also with parallel and perpendicular plane polarized exciting light. The chief characteristics of these spectra are that they consist essentially of continua with broad maxima in the continua.
D H, RANK, A E, DOUGLAS
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Light scattering in optical waveguides

Applied Optics, 1978
The coupling of scattered radiation from Raman-active core and cladding regions to the waveguide normal modes is analyzed by treating the scattered light as a classical incoherent effective source. Numerical results are presented for the limiting cases of single-mode or highly multimode excitation of the fiber.
P, O'Connor, J, Tauc
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Slow Light in Optical Fibers

Frontiers in Optics 2007/Laser Science XXIII/Organic Materials and Devices for Displays and Energy Conversion, 2005
We describe our recent work on producing all-optical, tunable delays in optical waveguides, including schemes that can operate at high bandwidths suitable for telecommunications. Article not available.
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Controlling light with light: nonlinear optics applications in optical communications

Summaries of Papers Presented at the Lasers and Electro-Optics. CLEO '02. Technical Diges, 2003
Summary form only given. Nonlinear optics concepts, which are important for optical communications, are reviewed. Purely optical nonlinear processes including semiconductor optical amplifiers, non-resonant third-order susceptibilities in glasses, organic materials and semiconductors, as well as cascaded second-order nonlinearities are presented and ...
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Light with enhanced optical chirality

Optics Letters, 2012
Tang and Cohen [Phys. Rev. Lett.104, 163901 (2010)] recently demonstrated a scheme to enhance the chiral response of molecules, which relies on the use of circularly polarized light in a standing wave configuration. Here we show a new type of light that possesses orbital angular momentum and enhanced chiral response.
Rosales-Guzman C., Volke-Sepulveda K., Torres J.P.   +2 more
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Carambola optics for recycling of light

Applied Optics, 2006
Recycling of light allows the luminance (radiance) emitted by a light source to be increased at the cost of reducing the total luminous flux (radiant power). Recycling of light means returning part of the emitted light to the source, where part of it will escape absorption.
Ralf, Leutz, Ling, Fu, Harald, Ries
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