“Optical Telecommunications” Equipment Set
Experiment topics:
• Glass fibres and optical telecommunications
• Acceptance cone and optimisation of coupling to a fibre optic cable
• Absorption, effect of the length of the transmission line
• Coupling losses
• Diffraction by an optical grating and optical multiplexing.
• Dichroitic filters and optical demultiplexing
• Spectral composition of light sources
• Spectral dispersion and recomposition
• Colour and interference filters
• Signal shaping and matching
• Band width and limiting frequency
• Calculation of theoretical band width
• Optical diaphony

Complete experiment system for quantitative investigation of transmission of signals via optical media, plus the processes of optical multiplexing and demultiplexing.
To build a two-dimensional optical system of high precision, a magnetic bench with a printed grid is provided, upon which it is possible to write.
Optical bench:
Available surface: 600x480 mm
Grid radials: 0°, 45°, 90°, 135°
Grid subdivisions: 5 cm, 1 cm
Weight: 6 kg approx.

Contents:
1 Optical bench, 600x480 mm, for attachment of magnetic components
8 Optical riders with magnetic base
2 Movable riders, l = 25 mm, with magnetic base
1 LED with collimating lens, in frame on stem, red
1 LED with collimating lens, in frame on stem, blue
1 Electronic signal transmitter, including power supply
1 Electronic signal receiver, including power supply
2 Phototransistors in housing on stem
1 Fibre-optic cable with SMA plugs, 1 m
1 Diffraction grating, 600 lines/mm
1 Dichroitic filter in housing on stem, blue
1 Dichroitic filter in housing on stem, yellow
2 Converging lenses in housing on stem, f = 50 mm, 40 mm dia.
1 Slide holder for gratings, on stem
Component holders and spring clips