Photonics Dictionary: T

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fiber-optic x

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tap

A device for extracting a portion of the optical signal from a fiber.

tensile loading -> proof stressing

A means of testing the strength of optical fibers to ensure reliability, by applying stress to the fiber so that any flaws generated during manufacturing or handling result in breakage of the fiber.

thermoplastic elastomer

A material used in the jacket of fiber optic cables.

tight buffer

Protective material surrounding the cladding of an optical fiber that allows the fiber no play within it.

time smear

The elongation of a transmitted data pulse through a fiber optic due to the chromatic dispersion of the fiber material.

time-sharing laser

A laser fitted with up to eight optical fibers that transmit the energy to different workstations in turn.

tolerance field

In fiber optics, the annular region between two concentric circles; used to specify fiber cladding and core sizes.

transmitter

In fiber optic communications, a light source whose beam can be modulated and sent along an optical fiber, and the electronics that support it.

transverse interferometry

The method used to measure the index profile of an optical fiber by placing it in an interferometer and illuminating the fiber transversely to its axis.

transverse offset method

A technique used to measure the mode-field diameter of an optical fiber by scanning one fiber past another at a distance of five microns or less.

transverse scattering

The method for measuring the index profile of an optical fiber or preform by illuminating it coherently and transversely to its axis, and examining the far-field radiation pattern.

trunk

In a fiber optic communications network, a circuit that connects two switching centers and does not branch off to terminal points.

Photonics DictionaryT

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