By Martin H. Weik
The first variation of this dictionary used to be written through the years previous 1980. No fiber optics thesaurus were released through any well-known stan dards physique. No different dictionaries in fiber optics have been released. an important record of fiber optics phrases and definitions, NBS guide a hundred and forty, Optical Waveguide Communications word list, used to be issued in 1982 through the nationwide Bureau of criteria, now the nationwide Institute of criteria and expertise. due to the fact that then a number of guides through criteria our bodies contained fiber optics phrases and definitions. In 1984 the Institute of electric and digital Engineers released IEEE ordinary 812-1984, Definitions of phrases on the subject of Fiber Optics. In 1986 the nationwide conversation Sys tem released Federal normal FED-STD-I037A, word list of Telecom munication phrases, containing approximately a hundred fiber optics phrases and definitions. In 1988 the digital Industries organization issued EIA-440A, Fiber Optic Terminology. All of those works have been in accordance with NBS instruction manual one hundred forty com piled 10 years prior. at present the foreign Electrotechnical fee is getting ready IEC Draft 731, Optical Communications, phrases and Definitions. paintings in fiber optics terminology is being meditated within the foreign association for Standardization and the foreign Telecommunications Union. None of those works constitutes a accomplished assurance of the sphere of fiber optics. each one was once ready by way of expert humans representing particular in terest teams. each one paintings used to be geared toward particular audiences: examine activi ties, improvement actions, brands, scientists, engineers, etc. Their content material is dedicated basically to primary clinical and technical rules and concept instead of cutting-edge and complicated technology.
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Extra resources for Fiber Optics Standard Dictionary
The net result is that electromagnetic waves of the resonant frequencies are absorbed while others are passed. Crystals and certain glasses have these periodic microstructures, and therefore Brillouin diagrams can be drawn for them. Brillouin scattering. The scattering of lightwaves in a propagation medium caused by thermally driven density fluctuations that cause frequency shifts of several gigahertz at room temperature. BRLP. Bit-rate-length product. broadcast satellite. See direct-broadcast satellite (DBS).
See Figs. C-2-C-7) connector set. See optical fiber connector set. connector variation. See optical connector variation. conservation law. See radiance conservation law. conservation of radiance law. Synonymous with radiance conservation law. constant. See Boltzmann's constant; Planck's constant; propagation constant; transverse propagation constant; Verdet's constant. constitutive relations. A set of three equations pertaining to the properties of a propagation medium in which electric and magnetic fields, electric currents, and C-2.
See optical cavity; resonant cavity. CDR. Carson bandwidth rule. cell. See Kerr cell; Pockels cell. cement. See optical cement. center. See cladding center; core center; network control center; processing center; reference surface center; scattering center; switching center. central-strength-member optical cable. A cable containing optical fibers that are wrapped around a high-tensile-strength material, such as stranded steel, Kevlar, and characteristic impedance 31 nylon, with a crush-resistant jacket wrapped around the outside.