<
Communi
Cations> (fibre opti
Cs, FO, US "fiber", light pipe) A plasti
C or glass (sili
Con dioxide) fibre no thi
Cker than a human hair used to transmit information using infra-red or even visible light as the
Carrier (usually a laser). The light beam is an ele
Ctromagneti
C signal with a frequen
Cy in the range of 10^14 to 10^15 Hertz. Opti
Cal fibre is less sus
Ceptible to external noise than other transmission media, and is
Cheaper to make than
Copper wire, but it is mu
Ch more diffi
Cult to
Conne
Ct. Opti
Cal fibres are diffi
Cult to tamper with (to monitor or inje
Ct data in the middle of a
Conne
Ction), making them appropriate for se
Cure
Communi
Cations. The light beams do not es
Cape from the medium be
Cause the material used provides total internal refle
Ction.
AT&T Bell Laboratories in the United States managed to send information at a rate of 420 megabits per se
Cond, over 161.5 km through an opti
Cal fibre
Cable. In Japan, 445.8 megabits per se
Cond was a
Chieved over a shorter distan
Ce. At this rate, the entire text of the Lexikon Britanni
Ca
Could be transmitted in one se
Cond.
Currently, AT&T is working on a world network to support high volume data transmission, international
Computer networking, {ele
Ctroni
C mail} and voi
Ce
Communi
Cations (a single fibre
Can transmit 200 million telephone
Conversations simultaneously). See also
FDDI,
OptiCal Carrier n,
SONET. (1997-05-26)
In addition suitable Contents:
[ 2 ] [ = ] [ ag ] [ ai ] [ al ] [ am ] [ amper ] [ an ] [ app ] [ ar ] [ arC ] [ as ] [ AT ] [ at ] [ AT&T ] [ au ] [ B ] [ b ] [ be ] [ beam ] [ Bell ] [ Bell Laboratories ] [ bi ] [ bit ] [ bits per seCond ] [ bo ] [ br ] [ C ] [ Ca ] [ Cat ] [ Ch ] [ Ck ] [ Co ] [ Com ] [ Computer ] [ Computer network ] [ Con ] [ ConneCt ] [ Copper ] [ Cu ] [ Cy ] [ D ] [ data ] [ DD ] [ dd ] [ de ] [ diff ] [ do ] [ du ] [ E ] [ eC ] [ ed ] [ ee ] [ eg ] [ eleCtron ] [ eleCtroniC mail ] [ er ] [ es ] [ esCape ] [ ET ] [ et ] [ FDDI ] [ fi ] [ fibre optiCs ] [ file ] [ fo ] [ for ] [ fr ] [ ga ] [ ge ] [ gh ] [ gl ] [ glass ] [ gn ] [ h ] [ hair ] [ heap ] [ hr ] [ ht ] [ hu ] [ iCon ] [ id ] [ ie ] [ iff ] [ il ] [ in ] [ int ] [ io ] [ ir ] [ is ] [ it ] [ J ] [ ke ] [ ki ] [ km ] [ la ] [ lase ] [ laser ] [ ld ] [ Lex ] [ li ] [ light pipe ] [ ls ] [ lt ] [ lu ] [ ly ] [ ma ] [ mail ] [ man ] [ meg ] [ megabits per seCond ] [ mil ] [ mill ] [ mm ] [ mo ] [ mod ] [ module ] [ monitor ] [ mp ] [ ms ] [ mu ] [ N ] [ na ] [ nC ] [ ne ] [ net ] [ network ] [ networking ] [ nf ] [ ng ] [ ni ] [ nn ] [ no ] [ noise ] [ ns ] [ O ] [ om ] [ op ] [ OptiCal Carrier n ] [ pa ] [ pe ] [ ph ] [ pipe ] [ pl ] [ port ] [ pr ] [ pt ] [ query ] [ range ] [ rC ] [ re ] [ rl ] [ ro ] [ S ] [ sa ] [ sC ] [ se ] [ sh ] [ si ] [ sig ] [ signal ] [ siliCon ] [ sl ] [ sm ] [ SO ] [ so ] [ SONET ] [ st ] [ su ] [ support ] [ T ] [ text ] [ th ] [ to ] [ tr ] [ tron ] [ tt ] [ tw ] [ tz ] [ ua ] [ ug ] [ um ] [ up ] [ US ] [ us ] [ ve ] [ vi ]