TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

LASER COMMUNICATION SYSTEM [3 records]

Record 1 2012-04-17

English

Subject field(s)
  • Optical Telecommunications
  • Photoelectricity and Electron Optics
CONT

Fiber Optics. A general term describing a light wave or optical communication system. Electrical information is converted to light energy, transmitted through optical fibers, and converted back into electrical information.

CONT

The basic components of an optical fiber communication system include the transmitter(laser and LED), the fiber(multimode, single mode, dispersion-shifted) and the receiver(PIN and APD detectors, coherent detectors, optical preamplifiers, receiver electronics).

French

Domaine(s)
  • Télécommunications optiques
  • Photo-électricité et optique électronique
DEF

Système de télécommunication utilisé pour transmettre l'information d'un point à un autre, au moyen d'une fibre optique.

Spanish

Save record 1

Record 2 2009-08-28

English

Subject field(s)
  • Optical Telecommunications
DEF

A technology that uses light propagating in free space to transmit data between two points.

CONT

Free-Space Optics(also known as FSO, Wireless Optics or Optical Wireless) is an optical data, voice and video transmission system. Like fiber optic cable, wireless optics communication systems use laser light to transmit a digital signal between two transceivers. However, unlike fiber, the laser like is transtmited through the air(free-space) instead of through a glass strand. In order for the digital signal to be transmitted and received, there must be clear line of site between each wireless optics unit. In other words, there should be no obstructions such as trees or buildings between the transceiver units.

CONT

The technology is useful where the physical connection of the transmit and receive locations is difficult, for example in cities where the laying of fibre optic cables is expensive. Free Space Optics is also used to communicate between space-craft, since outside of the atmosphere there is little to distort the signal. The optical links usually use infrared laser light, although low-data-rate communication over short distances is possible using LEDs [Light Emitting Diode]. IrDA [Infrared Data Association] is a very simple form of free-space optical communications. Distances up to the order of 10 km are possible, but the distance and data rate of connection is highly dependent on atmospheric conditions.

OBS

In Information Technology and Communications, IrDA refers to Infrared Data Association, a standard for communication between devices (such as computers, PDAs and mobile phones) over short distances using infrared signals.

Key term(s)
  • free space photonics

French

Domaine(s)
  • Télécommunications optiques
CONT

L'optique sans fil et la radio sont deux technologies foncièrement différentes qui ont longtemps été considérées comme concurrentes. [...] Avec l'optique sans fil, on obtient de très hauts débits garantis jusqu'à 10 Gb [gigabits] se propageant sur de courtes ou de moyennes distances (entre 100 m et 2 km), en «full duplex».

Spanish

Save record 2

Record 3 1984-10-22

English

Subject field(s)
  • Telecommunications Facilities
  • Lasers and Masers
  • Space Weapons

French

Domaine(s)
  • Installations de télécommunications
  • Masers et lasers
  • Armes orbitales

Spanish

Save record 3

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