Engineering and design

Fibre Optic Communications

Module code: 831H1
Level 7 (Masters)
15 credits in spring semester
Teaching method: Lecture
Assessment modes: Unseen examination

Topics covered in this module include:

  • analysis of slab wave-guide
  • analysis of step index fibre
  • dispersion in the step index fibre
  • mono-mode fibre
  • propagation of light rays in multi-mode graded index fibres
  • dispersion in graded index fibres
  • light sources and detectors
  • modulation of semiconductor light sources
  • transfer characteristic and impulse response of fibre communication systems
  • power launching and coupling efficiency
  • receiver principles and signal-to noise ratio in analogue receivers
  • receivers for digital optical fibre communication systems
  • system noise
  • system components and aspects of system design
  • coherent optical fibre communication
  • network systems.

Module learning outcomes

  • Describe and analyse the different types of optical fibre, both multi-mode and single-mode, and how these effect the performance and design of a fibre optic communication system.
  • Explain the operation, principles and application of laser diodes in fibre optic communication systems and how their design affects overall system performance.
  • Describe and analyse the physical origin of the sources of noise in a fibre optic communications system and the effect they have on the system design
  • Explain and analyse critically the detection methods and devices employed in fibre optic communications systems, including incoherent and coherent detection, and how these affect system design and performance.