Sökning: "optical losses"
Visar resultat 16 - 20 av 101 avhandlingar innehållade orden optical losses.
16. Optical design of stationary solar concentrators for high latitudes
Sammanfattning : The optical design of stationary solar concentrators for high latitudes has beenstudied. Irradiation distribution diagrams, which are tools for the design ofstationary linear concentrators, have been developed. LÄS MER
17. Optical Design and Characterization of Solar Concentrators for Photovoltaics
Sammanfattning : Stationary solar energy concentrators are a promising option for decreasing the price of photovoltaic electricity. This thesis studies stationary concentrators in PV/Thermal applications. The studied systems are parabolic troughs intended for building integration. The first chapters briefly explain the optics of solar energy concentrators. LÄS MER
18. Silicon photonic MEMS building blocks for low-power programmable circuits
Sammanfattning : Silicon photonics, or the confinement and control of light in integrated silicon waveguides, has rapidly grown from research labs to high-end chips for telecommunications. With the associated improvements in waveguide performance, the technology is promising for a wide range of new applications, from computing to sensing. LÄS MER
19. Dynamic and Static Diffractive Optics - some Examples
Sammanfattning : Diffractive optics is a modern branch of optics, that exploits microstructures to manipulate the propagation of light. Fast computers and the progress in manufacturing technique of microelectronics have made possible a rapid development of diffractive optics during the past 10 years. LÄS MER
20. III-V Nanowire Array Solar Cells: Optical and Electrical Modelling
Sammanfattning : This thesis describes optical and electrical modelling of vertically oriented III-V semiconductor nanowire array solar cells (NWASCs).In the optical studies, three-dimensional electromagnetic modelling was carried out with the scattering matrix method and the finite element method. LÄS MER