Description
This set provides a rugged, self-contained system for
demonstrating and using a fibre optic communications link.
The transmitter offers a choice of modulation – a variable
frequency audio tone and a 250 kHz square wave for speed of
light investigations. The receiver contains a user variable gain
amplifier with integral loudspeaker as well as direct monitoring
sockets for an oscilloscope. The system is completed with 5m
and 20m sheathed polymer optical fibre coils terminated with
clip housings to mate with the transmitter and receiver units.
The wavelength used is in the visible red part of the spectrum
and with the modulation set at 1 Hz the pulsing beam can
be easily seen so that the fibre optic principle can easily be
demonstrated. Full experimental details included. KS4 to Post16 A 20m coil of sheathed, polymer.
SP4-1737
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