Experiment(s):
1. Determination of numerical aperture and divergence angle
of Optical Fibre Cable (OFC)
2. Determination of attenuation in Optical Fibre Cable
Specifications:
a) X-Y Bed
Bed Length: 220 mm
Screen: 35 mm dia
Graduations on screen: 2 mm
Movement: Course and fine
using screw movement
b) Laser
Type: Semiconductor diode Laser
Wavelength: 625 nm (Red)
Output power: 3 mW
Mount: Cast iron base with levelling screw
Power Supply
Output: Suitable for 3 mW &
5 mW semiconductor Lasers
Rated Input: 220 V/50 Hz
or 110 V/60 Hz
Mains cord: 2 pin
c) Optical Fibre Cable (OFC)
Length: 1.5 m or 3 m
Core dia of the cable: 0.5 mm
d) Relative light intensity metre
Optical detector: Input from OFC
Rated Input: 220 V/50 Hz
or 110 V/60 Hz
Mains cord: 3 pin
