Förslaget inkom 2007-07-06
OBS! ANSÖKNINGSTIDEN FÖR DETTA EXJOBB HAR LÖPT UT.
Photonics crystals (PhCs) are dielectric or metallo-dielectric structures periodic in one, two or three dimensions, with a period on the order of the half of the wavelength of light. PhCs might affect the propagation of electromagnetic waves (EM) in the same way as the periodic potential in a semiconductor crystal affects the electron motion by defining allowed and forbidden electronic energy bands. The absence of allowed propagating EM modes inside the PhC structures, in a range of wavelengths called a photonic band gap, gives rise to distinct optical phenomena such as inhibition of spontaneous emission, high-reflecting omnidirectional mirrors, low-loss-waveguiding, and resonators among others. Meanwhile, extremely high dispersion near the photonic band gap edge also gives rise to other distinct optical phenomena including super-prisms and negative refractions. Research on PhCs has more or less exploded over the past few years, fuelled by the expectations of dramatic improvements in photonic device performance.
In the present work, the student is expected to design and simulate on one of the following devices: (1) Compact and efficient PhC optical filters, high-Q PhC cavities; (2) Slow light structures with coupled photonic crystal microcavities. (3) Super-prism and super lens in PhC structures.
This work has a constant need of several master students devoting to the above topics.