Basic Fibre Optic


Basic Fibre Optic

Key Features

  • Simple analogue and digital trans-receiver
  • 660nm channel with transmitter and receiver
  • AM-FM-PWM modulation and demodulation
  • On board function generator
  • Crystal controlled clock
  • Functional blocks indicated on-board mimic
  • Input-output and test points provided on board
  • On board voice link
  • Numerical aperture measurement jig and mandrel for bending loss included
  • Switched faults on transmitter and receiver


View Datasheet (PDF)


Category: .

Product Description

The BFOT is designed to teach the basics of Fibre Optics. The unit demonstrates properties of Fibre Optics transmitter and receiver, characteristics of Fibre Optic cables and different modulation/demodulation techniques. A number of experiments are included in the workbook and the BFOT can also be used to demonstrate various digital communication techniques via Fibre Optic link using the range of digital communications trainers.


  • Fibre optic analogue link
  • Fibre optic digital link
  • The relationship between the input signal and received signal in a 650nm fibre optic analogue/digital link
  • AM system using analogue and digital inputs
  • FM and PWM modulation systems
  • Propagation loss in optical fibre
  • Bending loss in optical fibre
  • Measurement of numerical aperture
  • Characteristics of E-O converter (LED)
  • Characteristics of fibre optic communications link
  • Measurement of power using optical power meter
  • Characteristics of E-O converter using optical power meter
  • Propagation loss using optical power meter
  • Setting of fibre optic voice link using AM-FM and PWM
  • Study of switched fault in AM-FM and PWM systems
  • Determination of the bit rate supported by the fibre optic link
  • Determination of the sensitivity of the fibre optic link
  • Determination of power margins (Power budget)
  • V-I characteristics of photo LED
  • Characteristics of photo detector
  • Measurement of bit error rate