OSI Optoelectronics - Custom Solutions LB 5/23

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Ohara Corp. - Optical Glass, Polish substrates 10-23

Bristol Instruments, Inc. - 872 Series High-Res 4/24 HP

374 terms

Photonics Dictionary

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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.

UVFO

ultraviolet fiber optics

V-groove

A V-shaped channel pressed or etched into a substrate, in which, for example, optical fibers may be placed to create an integrated optical component.

V-number -> normalized frequency

Also referred to as the V number in fiber optics; the normalized frequency is a dimensionless quantity, denoted by the symbol V, given by: where a is waveguide core radius, l is wavelength in vacuum,...

vapor-phase axial deposition

A process by which high-quality fiber optics are made. See axial vapor-phase deposition.

visual fault locator

A device that enables visual tracing of a fiber optic cable to check for breaks and defects by coupling visible light into the cable. Also called fiber tracer.

vitreous silica -> fused silica

Glass consisting of almost pure silicon dioxide (SiO2). Also called vitreous silica. Frequently used in optical fibers and windows.

vortex phase plate

A vortex phase plate is an optical device designed to impart a phase singularity, commonly referred to as a vortex or phase vortex, onto a light beam. This singularity results in a phase profile...

w-type fibers -> double-clad fiber

Double-clad fiber (DCF) is a specialized optical fiber that features two concentric cladding layers surrounding a core. The design of double-clad fibers allows them to be used in various...

window

1. A piece of glass with plane parallel surfaces used to admit light into an optical system and to exclude dirt and moisture. 2. A particular region of the electromagnetic spectrum that has been...

zero halogen thermoplastic

A highly flame-retardant material used to jacket fiber optic cables, especially on shipboard applications.

zero-dispersion wavelength

In a single-mode optical fiber, the wavelength that causes material dispersion and waveguide dispersion to cancel each other. In a multimode fiber, loose term for the wavelength at which there is a...

zip-cord

A two-fiber optical cable containing two single-fiber cables that are connected by a strip of jacket and that can easily be separated from one another for the installation of optical connectors.

zirconium fluoride

An infrared transmitting material used in the production of fluoride glasses for optical fibers.

Photonics Dictionary

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