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Introduction,roved optical sources, notably the laser. The advantages with respect to optical frequencies lie in the large potential bandwidth available, as a percentage of the carrier frequency, and the extremely short wavelengths with the attendant small component size. Although there was an initial flurry of纠缠,缠绕 发表于 2025-3-25 17:43:24
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Optical Receivers,er. In this chapter we examine in detail the receiver structure and the way in which the intercepted field at the receiver area is converted to detected signals. Our objective is to define the key parameters characterizing the optical receiver and to establish the relation between these parameters a思想上升 发表于 2025-3-26 02:14:26
The Fiber-Optic Channel,cal beam to transmit optical energy from one point to another. The fiber is the optical equivalent of a coaxial cable or waveguide commonly used for microwave transmission. Decades ago attempts to communicate by fiber over long distances were hampered by the severe attenuation of this channel. Howevvascular 发表于 2025-3-26 07:11:39
The Turbulence Channel,. It is well known that turbulence-induced random fluctuations in the atmosphere’s temperature generate corresponding random irregularities in the index of refraction. Upon passing through these irregularities, the wavefronts associated with an optical beam become distorted, the magnitude of the diskidney 发表于 2025-3-26 09:24:49
The Optical Scatter Channel and Its Properties,ccount for the atmospheric and oceanic influences on such systems—in specific terms, the effects of particulate multiple scattering on optical radiation transfer. This is because the haze, fog, rain, and clouds comprising most of the atmospheric channel, and the yellow substance and small “sea animaprecede 发表于 2025-3-26 16:16:27
Mathematical Models for Energy Propagation in the Optical Scatter Channel,nd irradiance propagation in that medium. Unfortunately, the extensive amount of material currently available on the subject prohibits our being complete and all-inclusive in one chapter of a book. Therefore, we shall limit our discussions to those mathematical approaches and results which have founinsightful 发表于 2025-3-26 20:10:36
Sherman Karp,Robert M. Gagliardi,Steven E. Moran,Larry B. Stottsandter Substanzen. Das gilt besonders bei der Gewinnung der verschiedenen Silicium-methylen-Verbindungen bei der Pyrolyse des Si(CH.). und der Methylchlorsilane. Um eine vollständige Untersuchung dieser Reaktion überhaupt beginnen zu können, mußten geeignete Trennverfahren ausgearbeitet werden. Es w