PI Physik Instrumente - Semiconductor Applications 5/24 LW LB

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28 terms

Photonics Dictionary: T

Clear All Filters x transmit x T x
transmittance

The ratio of the radiant power transmitted by an object to the incident radiant power.

transmitter central wavelength range

The central wavelength range of a transmitter based on the worst-case scenarios of temperature, manufacturing and other variations.

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.

television transmitter

An electronic device used to encode video and audio signals of a television camera into radio waves that are broadcast to remote receivers. The video and audio components are transmitted...

t number

The equivalent f number of a fictitious lens that has a circular opening and 100 percent transmittance, which would give the same central illumination as the lens being considered: where...

T stop -> t number

The equivalent f number of a fictitious lens that has a circular opening and 100 percent transmittance, which would give the same central illumination as the lens being considered: where...

T/R

transmit/receive unit

telemeter

1. The term used to describe any of the many instruments used to remotely record physical dimensions, such as strain, temperature or pressure, and transmit this data to a receiving station. 2. A...

telemetry

The science of sensing and measuring information at some remote location and transmitting the data to a convenient location for reading or recording.

television signal

The combination of the audio and visual signals that are transmitted and received at the same time, correlating the scene and sound in a television picture.

termination

The process of attaching a device to the end of a fiber cable to enable the beam to be transmitted farther, to pass to another device and to avoid reflection.

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.

TOSA

transmitter optical subassembly

tourmaline

A naturally occurring crystalline mineral that has the property of polarizing transmitted light. It is little used now that the Polaroid sheet is available.

transceiver

An instrument or system capable of both transmitting and receiving a signal.

translucent

Pertaining to materials having the property of reflecting a part and transmitting a part of the incident radiation.

transmission efficiency

Measure of the amount of light that is transmitted, relative to the amount lost by absorption or reflection.

transmission electron microscope

A transmission electron microscope (TEM) is a powerful microscopy technique that uses a beam of electrons to create high-resolution images of extremely thin samples. In a TEM, electrons are...

transmission grating

A transparent diffraction grating that serves to transmit light.

transmission loss

The decrease in power that occurs when an optical beam or signal is transmitted through a system.

transmission plane

In polarized light, the plane of vibration that a polarizer will transmit.

transmission window -> spectral window

A wavelength region of relatively high transmittance, surrounded by regions of low transmittance.

transmissivity

The internal transmittance per unit thickness of a nondiffusing material.

transparency

An image affixed to a transparent photographic film or plate by photographic, printing or chemical methods. It may be viewed by transmitted light.

transparent

Capable of transmitting light with little absorption and no appreciable scattering or diffusion.

transponder

A receiver-transmitter device that automatically transmits a signal when the proper interrogating signal is received.

tristimulus colorimeter -> colorimeter

A colorimeter is a device used to measure and quantify the color characteristics of an object or a light source. It provides objective and standardized color information, typically expressed in terms...

Photonics DictionaryT

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