Word forms: plural optical fibres
regional note: in AM, use optical fiber
An optical fibre
is a very thin thread
of glass inside
a protective coating
. Optical fibres are used to carry information in the form of light.
Nearly every long-distance call made in Britain now travels on optical fibre instead
...an optical fibre network to which every home and office can be connected.
COBUILD Advanced English Dictionary. Copyright © HarperCollins Publishers