Overall, fiber is composed of :
Over a glass of very fine, the heart (a few microns), a single, sometimes very long (up to several hundreds of km)
a sheath that traps light in the heart reflecting virtually without loss (generally, a transparent envelope of a refractive index lower (some will remember their physics courses),
a protective sheath that can meet several tens to several hundreds of fibers,
a system of very specific connection (if not exposed to the light ends and not out).
The lifetime of such a driver is estimated to be at least 20 years.
The electrical signal to be transmitted, originally led by drivers metal is transformed into light signal with a transceiver. The transceiver uses an LED (Light Emitting Diode - Light Emitting Diode) or a laser to produce light.
For the reverse, to convert the light signal into an electrical signal, using a detector. Usually a photodiode.
No comments:
Post a Comment