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Physical optics

About: Physical optics is a research topic. Over the lifetime, 5342 publications have been published within this topic receiving 101388 citations. The topic is also known as: wave optics.


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252 citations

Book
10 Jul 1986
TL;DR: In this paper, the fundamental concepts and principles of guided wave optics are developed from Maxwell's equations, and a complete guide gives a clear coverage of 2 and 3-dimensional optical waveguides, optical fibers, prism and dielectric waveguide couplers, waveguide filters, grating reflectors and optical spectrum analyzers.
Abstract: Using optics to present electromagnetic theory, Electromagnetic Principles of Integrated Optics is a radical departure from other texts and a unified and comprehensive introduction to the field of integrated optics. All the fundamental concepts and principles of guided wave optics are developed from Maxwell's equations. From this perspective, the study of the slab and rectangular dielectric waveguide replaces that of the parallel plate and rectangular mentalic waveguide, the optical fiber that of the coaxial transmission line, radiation losses that of conduction losses, and aperture diffraction that of antenna radiation. This complete guide gives you clear coverage of 2- and 3-dimensional optical waveguides, optical fibers, prism and dielectric waveguide couplers, waveguide filters, grating reflectors and optical spectrum analyzers. You will find new approaches to topics such as dielectric waveguides, radiation modes and WKB theory. Electromagnetic Principles of Integrated Optics is carefully structured so that all material is developed from first principles. Sophisticated concepts such as the Goos-Haenchen shift, radiation modes, Bragg scattering of guided modes and optical fiber mode theory have a firm foundation and are made easily understandable. Problems and worked-out examples reinforce the material and are good for self-study. For reference, as a problem-solver, or for self-study. The book provides many of the concepts and mathematical tools necessary to analyze realworld guided wave optics problems.

250 citations

Journal ArticleDOI
TL;DR: A geometric and electromagnetic model of a typical element of urban structure is presented, in order to analytically evaluate in closed form its electromagnetic return to an active microwave sensor to understand what information on geometric and dielectric properties of a building can be extracted from microwave remote sensing data.
Abstract: In this paper, a geometric and electromagnetic model of a typical element of urban structure is presented, in order to analytically evaluate in closed form its electromagnetic return to an active microwave sensor. This model can be used to understand what information on geometric and dielectric properties of a building can be extracted from microwave remote sensing data. The geometrical model consists of a rectangular parallelepiped whose vertical walls form a generic angle with respect to the sensor line of flight. The parallelepiped is placed on a rough surface. The radar return from such a structure can be decomposed into single-scattering contributions from the (rough) ground, the building roof (a plane surface in our model), and vertical walls and multiple scattering contributions from dihedral structures formed by vertical walls and ground. In our model, single-scattering contributions are evaluated by using either physical optics (PO) or geometrical optics (GO), depending on surface roughness. In order to account for multiple scattering between buildings and terrain, we use GO to evaluate the field reflected by the smooth wall toward the ground (first bounce) or the sensor (second or third bounce) and GO or PO (according to ground surface roughness) to evaluate the field scattered by the ground toward the wall (first or second bounce) or the sensor (second bounce). Finally, the above model is used to analyze the field backscattered from a building as a function of the main scene parameters; in particular, the angle between vertical walls and sensor line of night and the dependence on the look angle are analyzed.

250 citations

07 Sep 1971
TL;DR: In this article, the diffraction of plane electromagnetic waves by ideally conducting bodies, the surface of which has discontinuities, is investigated, and the linear dimensions of the bodies are assumed to be large in comparison with the wavelength.
Abstract: : The diffraction of plane electromagnetic waves by ideally conducting bodies, the surface of which have discontinuities, is investigated in the report. The linear dimensions of the bodies are assumed to be large in comparison with the wavelength. The method developed takes into account the perturbation of the field in the vicinity of the surface discontinuity and allows one to substantially refine the approximations of geometric and physical optics. Expressions are found for the fringing field in the distant zone. A numerical calculation is performed of the scattering characteristics, and a comparison is made with the results of rigorous theory and with experiments.

242 citations

Journal ArticleDOI
TL;DR: The nonlinear optics of Si photonic wires are discussed in this paper, where the authors review the fundamental optical physics and emerging applications for these Si wires and discuss their potential for functional on-chip nano-nonlinear optical devices of just a few millimeters in length.
Abstract: The nonlinear optics of Si photonic wires is discussed. The distinctive features of these waveguides are that they have extremely large third-order susceptibility χ(3) and dispersive properties. The strong dispersion and large third-order nonlinearity in Si photonic wires cause the linear and nonlinear optical physics in these guides to be intimately linked. By carefully choosing the waveguide dimensions, both linear and nonlinear optical properties of Si wires can be engineered. We review the fundamental optical physics and emerging applications for these Si wires. In many cases, the relatively low threshold powers for nonlinear optical effects in these wires make them potential candidates for functional on-chip nonlinear optical devices of just a few millimeters in length; conversely, the absence of nonlinear optical impairment is important for the use of Si wires in on-chip interconnects. In addition, the characteristic length scales of linear and nonlinear optical effects in Si wires are markedly different from those in commonly used optical guiding systems, such as optical fibers or photonic crystal fibers, and therefore guiding structures based on Si wires represent ideal optical media for investigating new and intriguing physical phenomena.

238 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202357
2022157
202196
2020140
2019141
2018162