Jeulin Fibroptonic Mode D'emploi page 45

Optics
Fibroptonic
Ref : 202 012
1 Purpose
To study the directivity of an infrared beam and its optical properties. Acoustical
detection.
2 2 Experiment no. 2
Rectilinear propagation of an infrared beam
ENGLISH
FIBROPTONIC
PROPERTIES OF AN INFRARED BEAM
2.1 Equipment:
•
Transmitter
•
Receiver
•
6 V or 12 V DC power supply
•
Signal generator (delivering a sinusoidal voltage with a frequency between 1000
and 2000 Hz).
•
The optical fibre is not used.
2.2 Set-up:
•
Place the transmitter and receiver face to face (figure 7)
•
Power the transmitter and receiver with 6 V or 12 V DC (in this case 12 V is
preferable)
•
Place the switch located beside the transmitter connector to On (O), the green LED
must come on.
•
Place the second switch, which controls the microphone to EXT (see figure 7)
•
Connect the signal generator between the yellow and black terminals (black to the
ground of the signal generator). The amplitude of the sine-wave signal is of the
order of 1 volt.
Signal generator
Transmitter
Figure 7: Set-up indicating the rectilinear propagation of an infrared beam
OPTICAL AND GEOMETRICAL
receiver
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SHEET
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