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.