graded-refractive index

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• Refractive index profile — A refractive index profile is the distribution of refractive indices of materials within an optical fiber. Some optical fiber has a step index profile, in which the core has one uniformly distributed index and the cladding has a lower uniformly… …   Wikipedia

• graded-index fibre — noun A fibre in an optical fibre cable, in which the refractive index of the glass decreases gradually or in small steps from the central core to the periphery • • • Main Entry: ↑grade …   Useful english dictionary

• Graded-index fiber — In fiber optics, a graded index or gradient index fiber is an optical fiber whose core has a refractive index that decreases with increasing radial distance from the fiber axis (the imaginary central axis running down the length of the… …   Wikipedia

• Gradient-index optics — is the branch of optics covering optical effects produced by a gradual variation of the refractive index of a material. An example of gradient index optics is the common mirage of a pool of water appearing on a road on a hot day. The pool is… …   Wikipedia

• Step-index profile — For an optical fiber, a step index profile is a refractive index profile characterized by a uniform refractive index within the core and a sharp decrease in refractive index at the core cladding so that the cladding is of a lower refractive index …   Wikipedia

• Power-law index profile — For optical fibers, a power law index profile is an index of refraction profile characterized by : n(r) = egin{cases} n 1 sqrt{1 2Deltaleft({r over alpha} ight)^g} r le alpha n 1 sqrt{1 2Delta} r ge alpha end{cases}whereDelta = {n 1^2 n 2^2 over …   Wikipedia

• stepped-index fibre — noun (telecommunications) An optical fibre in which there is an abrupt transition from the higher refractive index of the information bearing core to the lower refractive index of the cladding (cf ↑graded index fibre) • • • Main Entry: ↑step …   Useful english dictionary

• Modal dispersion — is a distortion mechanism occurring in multimode fibers and other waveguides, in which the signal is spread in time because the propagation velocity of the optical signal is not the same for all modes. Other names for this phenomenon include… …   Wikipedia

• hysteroscope — An endoscope used in direct visual examination of the uterine cavity. SYN: uteroscope. [hystero + G. skopeo, to view] contact h. h. with a graded refractive index rod lens; it does not require distension for visualization and af …   Medical dictionary

• Optical fiber — A bundle of optical fibers A TOSLINK fiber optic audio c …   Wikipedia

• industrial glass — Introduction       solid material that is normally lustrous and transparent in appearance and that shows great durability under exposure to the natural elements. These three properties lustre, transparency, and durability make glass a favoured… …   Universalium