By Martin H. Weik
The first variation of this dictionary used to be written in the course of the years previous 1980. No fiber optics word list have been released via 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 one hundred forty, Optical Waveguide Communications word list, used to be issued in 1982 by means of the nationwide Bureau of criteria, now the nationwide Institute of criteria and expertise. in view that then a number of guides via criteria our bodies contained fiber optics phrases and definitions. In 1984 the Institute of electric and digital Engineers released IEEE normal 812-1984, Definitions of phrases when it comes to Fiber Optics. In 1986 the nationwide communique Sys tem released Federal ordinary FED-STD-I037A, thesaurus 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 response to NBS instruction manual one hundred forty com piled 10 years previous. at the moment the overseas Electrotechnical fee is getting ready IEC Draft 731, Optical Communications, phrases and Definitions. paintings in fiber optics terminology is being reflected within the foreign association for Standardization and the foreign Telecommunications Union. None of those works constitutes a accomplished insurance of the sphere of fiber optics. each one used to be ready via expert humans representing particular in terest teams. every one paintings was once aimed 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 thought instead of state of the art and complicated technology.
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Additional info for Fiber Optics Standard Dictionary
Cavity. 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.
2. The band of frequencies associated with or comprising an original signal from the source that generated it. In the process of modulation, the baseband beam diameter 19 is occupied by the aggregate of the transmitted signals used to modulate a carrier. In demodulation, it is the recovered aggregate of the transmitted signals. r-----Jn L... ~n ELECTRICAL INPUT SIGNAL MODULATED LIGHT SOURCES CLADDING LIGHT CORE CLADDING ' - - - OPTICAL FIBER 8-2. Multiplexing n baseband optical signals into a single optical fiber by means of a fiber optic multiplexer.
See core-cladding concentricity. cladding diameter. In a round optical fiber, the diameter of the circle that best fits the outer limit of the cladding. The center of this circle is the cladding center. cladding guided mode. See cladding mode. cladding mode. In an optical waveguide, a propagation mode supported by the cladding, that is, a mode in which the electromagnetic field is confined to the cladding and the core because there is a lower refractive-index propagation medium surrounding the outermost cladding.