Registry
Module Specifications
Archived Version 2014 - 2015
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Description INACTIVE - The use of semiconductor devices in optical communications and the recent development in semiconductor materials have brought up the need to understand the technology of these components. This module aims to equip students with a deep understanding of the science of these devices and their integration in optical communication networks. | |||||||||||||||||||||||||||||||||||||||||
Learning Outcomes 1. select semiconductor materials for light emission and detection applications based on an understanding of photoemission photoabsorption and band structure. 2. be capable of solving various problems related to light emitting and light detecting device designs. 3. mathematically analyse various types of semiconductor lasers and detectors. 4. identify key principles of optical communication devices. 5. identify and distinguish various optical data processing schemes. 6. identifiy growth and processing technologies for light emitter and detector fabrication 7. analyse the propagation of an electromagnetic wave in free space, at a media interfaces, and in various guides. | |||||||||||||||||||||||||||||||||||||||||
All module information is indicative and subject to change. For further information,students are advised to refer to the University's Marks and Standards and Programme Specific Regulations at: http://www.dcu.ie/registry/examinations/index.shtml |
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Indicative Content and
Learning Activities Duality of lightDescription of light as an electromagnetic wave. Introduction from Maxwell's equation to Helmholtz's equation. Limitation of the electromagnetic approach, introduction of the quantum aspect of light. Definition of photon.Interaction light matterDerivation of Einstein's coefficent. Conditions for light emission or detection.Optical properties of semiconductors materials, definition of band-gap direct or indirect and their use for light emission and detection.Physics of semiconductor devicesFeatures of various types of light-emitting diode, lasers and semiconductor amplifiers. Overview of LED/LASER manufacturing. Physics of double hetero-junction lasers: their simulation based on rate-equation in time and frequency domains, noise origin and simulation. Physics of light detectors, photodiode and avalanche photodiode, sensitivity, response time, wavelength selection using optical filters, bandwidth and insertion loss of optical filters.Use of semiconductor lasers for telecommunicationsShort pulse generation by Q-switching and passive or active mode-locking schemes. Physics of external modulators. All optical function generated by semiconductor lasers, wavelength cobnversion, and clock recovery for instance. Applications of semiconductor devices in OTDM or WDM.Semiconductor materialOverview of active materials bulk, quantum well, wire dot and quatum dot. description of photonics band-gap materials | |||||||||||||||||||||||||||||||||||||||||
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Indicative Reading List
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Other Resources None | |||||||||||||||||||||||||||||||||||||||||
Programme or List of Programmes | |||||||||||||||||||||||||||||||||||||||||
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