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Full-Text Articles in Physics
Measuring And Filtering Microwave Radiations Using Frequency Selective Surface Through Energy Saving Glass, Irfan Ullah
Measuring And Filtering Microwave Radiations Using Frequency Selective Surface Through Energy Saving Glass, Irfan Ullah
Theses: Doctorates and Masters
This thesis presents the results of our investigation into the measurement and filtering of microwave radiation, and the subsequent development of a microwave reduction solution for modern building architecture utilising Energy Saving Glass (ESG), in conjunction with Frequency Selective (FSS) surfaces through which useful signals can be filtered. In the investigation, radiation power density levels arising from the three common microwave sources (radio base stations, mobile phones, and microwave ovens) were measured, and the results were compared with the standards provided by the Australian Radiation Protection and Nuclear Safety Agency. For the radio base stations, the relationship between radiation intensity …
Linear-Cavity Tunable Fibre Lasers Employing An Opto-Vlsi Processor And A Mems-Based Device, David Daniel Michel
Linear-Cavity Tunable Fibre Lasers Employing An Opto-Vlsi Processor And A Mems-Based Device, David Daniel Michel
Theses: Doctorates and Masters
This thesis proposes and demonstrates experimentally two novel linear-cavity tunable fibre lasers employing an erbium-doped fibre (EDF) in conjunction with an Opto- VLSI processor and a MEMS-based device for wavelength selection. The Opto-VLSI processor and the MEMS-based device along with an optical collimator, a Bragg grating plate and an optical lens, enable the realisation of an optical filter for continuous tuning of wavelengths over the amplified spontaneous emission (ASE) range of the EDF. We also propose the use of a section of un-pumped EDF as a saturable absorber (SA), which suppresses noise spikes caused by the high optical pumping power. …