Reference: Lab Experiments Journal vol-6, No.4, Page-309 Lab Experiments Journal vol-10, No.1, Page-60
Numerical aperature, divergence angle & attenuation
Model: NA-202
Experiment(s):
Determination of numerical aperture and divergence angle of Optical Fibre Cable (OFC)
Determination of attenuation in Optical Fibre Cable
Specifications
1. X-Y Bed
Bed Length: 220 mm Screen: 35 mm dia Graduations on screen: 2 mm Movement: Course and fine using screw movement
2. 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
3. Optical Fibre Cable (OFC)
Length: 1.5 m or 3 m Core dia of the cable: 0.5 mm
4. Relative light intensity metre
Optical detector: Input from OFC Rated Input: 220 V/50 Hz or 110 V/60 Hz Mains cord: 3 pin