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OMA: Optical fibre principles
This course explains the basic principles of optical fibre transmission, describes the role of the main components of an optical link and the hazards presented by optical sources, and describes the factors that limit the transmission distance and data transfer rate of a link.
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Level:
What does this mean?
Target audience:
This course is intended for technical staff who are responsible for the installation and maintenance of optical fibre links.
Course prerequisites:
This course assumes a basic understanding of digital transmission and the use of decibels. It is recommended that the PTT courses "Analogue and digital signals " and "Signal impairments" are studied before attempting this course.
Course objectives:
By the end of this course you will be able to:
- describe the basic structure of an optical fibre and explain how infrared energy is propagated down the core of a fibre.
- describe the causes and effect of modal, chromatic and polarisation mode dispersion.
- describe and compare the structure and characteristics of step index multimode fibre, graded index fibre, and singlemode fibre.
- compare the characteristics and applications of various types of optical fibre as specified by the OSI/IEC and ITU.
- describe the role of the main components of an optical link including line terminal equipment, optical distribution shelf, and optical amplifiers.
- describe the role of the various protection layers employed in optical cables.
- explain the significance of the IEC classification of optical sources according to the hazard they present.
- explain the main causes of optical loss in a fibre transmission system and discuss methods of minimising those losses.
- calculate the power budget of an optical link taking into account receiver sensitivity, system margin and dispersion penalty.
- describe the principles of wavelength division multiplexing (WDM) and compare wideband, coarse, and dense WDM.
Number of modules: 5
Approximate study time: 6 hours
Download and view the course specification in Adobe PDF format
Delivery platform requirements:
To access the course, a computer/tablet running a browser such as Chrome, Safari, Edge etc. is required. The device should have an active Internet connection and a screen resolution of at least 1024x768.
