- 産業: Telecommunications
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In an optical fiber, a power-law index profile with the profile parameter, g, equal to 2. Synonym quadratic profile.
Industry:Telecommunications
In an optical fiber, a power-law index profile with the profile parameter, g, equal to 2. Synonym quadratic profile.
Industry:Telecommunications
In an optical fiber, a mode that (a) has a field intensity that decays monotonically in the transverse direction everywhere external to the core and (b) does not lose power to radiation. Note: Except for single-mode fibers, the power in bound modes is predominantly contained in the core of the fiber. Synonyms guided mode, trapped mode.
Industry:Telecommunications
In an optical fiber, a mode that (a) has a field intensity that decays monotonically in the transverse direction everywhere external to the core and (b) does not lose power to radiation. Note: Except for single-mode fibers, the power in bound modes is predominantly contained in the core of the fiber. Synonyms guided mode, trapped mode.
Industry:Telecommunications
In an optical fiber, a mode having a field that decays monotonically for a finite distance in the transverse direction but becomes oscillatory everywhere beyond that finite distance. Note: Leaky modes correspond to leaky rays in the terminology of geometric optics. Leaky modes experience attenuation, even if the waveguide is perfect in every respect. Synonym tunneling mode.
Industry:Telecommunications
In an optical fiber, a mode having a field that decays monotonically for a finite distance in the transverse direction but becomes oscillatory everywhere beyond that finite distance. Note: Leaky modes correspond to leaky rays in the terminology of geometric optics. Leaky modes experience attenuation, even if the waveguide is perfect in every respect. Synonym tunneling mode.
Industry:Telecommunications
In an optical communication system, an optoelectronic device or module that receives an optical signal, amplifies it (or, in the case of a digital signal, reshapes, retimes, or otherwise reconstructs it,) and retransmits it as an optical signal.
Industry:Telecommunications
In an optical fiber, a measure of the relative difference in refractive index of the core and cladding. Note: Refractive index contrast, , is given by = (n12- n 22) / (2n12,) where n1 is the maximum refractive index in the core and n2 is the refractive index of the homogeneous cladding.
Industry:Telecommunications
In an optical fiber, a deliberate, controlled break, intended to create a perfectly flat endface, perpendicular to the longitudinal axis of the fiber. Note: A cleave is made by first introducing a microscopic fracture ("nick") into the fiber with a special tool, called a "cleaving tool,"which has a sharp blade of hard material, such as diamond, sapphire, or tungsten carbide. If proper tension is applied to the fiber as the nick is made, or immediately afterward (this may be done by the cleaving tool in some designs, or manually in other designs,) the fracture will propagate in a controlled fashion, creating the desired endface. 2. To break a fiber in such a controlled fashion. Note: A good cleave is required for a successful splice of an optical fiber, whether by fusion or mechanical means. Also, some types of fiber-optic connectors do not employ abrasives and polishers. Instead, they use some type of cleaving technique to trim the fiber to its proper length, and produce a smooth, flat perpendicular endface.
Industry:Telecommunications
In an optical fiber, a cladding in which the nominal refractive index is constant throughout. Note: An optical fiber may have several homogeneous claddings, each having a different refractive index.
Industry:Telecommunications
