crystal bridge
1.STUDIES ON RAMAN SPECTRUM OF NON-CRYSTAL SiO_2-TiO_2 AND STRUCTURE OF NON-BRIDGE OXYGEN
2.This thesis work has researched the fabrication technics of photonic crystal defect waveguide with air-bridge structure and collecting waveguide; Suggested using UV-lithography and wet etching to fabricate traditional waveguide, after that, using EB-lithography and dry etching to fabricate photonic crystal holes, so can reduce the fabrication cost by a big range; Designed the moulding board, which can fabricate the air-bridge structure and is convenient for recognizing position in EB-lithography; the structure consisted of traditional waveguides and etching grooves are fabricated on SOI successfully, then an successful EB-lithography is realized on the structure, the defect waveguide collected with the traditional waveguide quite well; Used the etching grooves to do the sacrificial layer etching experiment, which grounded etching sacrificial layer by photonic crystal holes in next step.
4.An air-bridge structure can increase the light confine ability in the vertical direction of 2-D photonic crystal effectively.
5.The crystal structures of these complexes show that one water, one acetic acid and two acetylacetonate groups coordinate to each rare earth ion, and two rare earth ions are connected through oxygen-bridge forming a dinuclear complex. Thus, each rare earth ion is coordinated by eight oxygen atoms.
