- 産業: Telecommunications
- Number of terms: 29235
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ATIS is the leading technical planning and standards development organization committed to the rapid development of global, market-driven standards for the information, entertainment and communications industry.
An optical fiber used in conjunction with a source to excite the modes of another fiber in a particular fashion. Note: Launching fibers are most often used in test systems to improve the precision of measurements. Synonym injection fiber.
Industry:Telecommunications
An optical fiber used in conjunction with a source to excite the modes of another fiber in a particular fashion. Note: Launching fibers are most often used in test systems to improve the precision of measurements. Synonym injection fiber.
Industry:Telecommunications
An optical fiber with a core having a refractive index that decreases with increasing radial distance from the fiber axis. Note: The most common refractive index profile for a graded-index fiber is very nearly parabolic. The parabolic profile results in continual refocusing of the rays in the core, and compensates for multimode distortion.
Industry:Telecommunications
An optical fiber with a core having a uniform refractive index.
Industry:Telecommunications
An optical filter that reflects one or more optical bands or wavelengths and transmits others, while maintaining a nearly zero coefficient of absorption for all wavelengths of interest. Note: A dichroic filter may be high-pass, low-pass, band-pass, or band rejection.
Industry:Telecommunications
An optical filter that reflects one or more spectral bands or lines and transmits others, while maintaining a nearly zero coefficient of absorption for all wavelengths of interest. Note 1: An interference filter may be high-pass, low-pass, bandpass, or band-rejection. Note 2: An interference filter consists of multiple thin layers of dielectric material having different refractive indices. There also may be metallic layers. Interference filters are wavelength-selective by virtue of the interference effects that take place between the incident and reflected waves at the thin-film boundaries.
Industry:Telecommunications
An optical filter that reflects one or more spectral bands or lines and transmits others, while maintaining a nearly zero coefficient of absorption for all wavelengths of interest. Note 1: An interference filter may be high-pass, low-pass, bandpass, or band-rejection. Note 2: An interference filter consists of multiple thin layers of dielectric material having different refractive indices. There also may be metallic layers. Interference filters are wavelength-selective by virtue of the interference effects that take place between the incident and reflected waves at the thin-film boundaries.
Industry:Telecommunications
An optical pattern consisting of discrete steps or shades of gray between black and white.
Industry:Telecommunications
An optical pulse having a shape, spectral content, and power level designed to take advantage of nonlinear effects in an optical fiber waveguide, for the purpose of essentially negating dispersion over long distances.
Industry:Telecommunications
An optical source that obeys Lambert's cosine law, i.e., that has an intensity directly proportional to the cosine of the angle from which it is viewed. Note: Conventional (surface-emitting) LEDs are approximately Lambertian. They have a large beam divergence. This results in a radiation pattern that resembles a sphere. Thus, most of their total optical output is not coupled into communication fibers.
Industry:Telecommunications
