光电子材料导论光子晶体.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Photonic Crystal Fibers:,Nonlinear and Active Devices,Outline,Nonlinear Photonic Crystal Fibers,Dispersion design using simple,PCFs,Hybrid and,polarisation,maintaining,highly nonlinear,PCFs,Liquid crystals in,PCFs,Band Gap guidance in LCPBG,fibres,Thermal,tunability,in LCPBG,fibres,Electrically tunable PBG guidance,Optical,tunability,of LC-PCF components,Highlights in the history of crystal,fibres,-Low-loss single-mode,fibres,from,undoped,silica,(Kaiser et al.,Bell,Syst,.Tech.J.,53,1974),-The photonic,bandgap,effect was first described,(,Yablonovitch,John,Phys.Rev.Lett,58,1987),-,Fibres,having a photonic crystal cladding demonstrated,(Knight et al.,Opt.Lett,.,21,1996),-First photonic,bandgap,guidance demonstrated in an optical,fibre,(Knight et al.Science,282,1998),-Numerous results on photonic crystal,fibres,from 1999 to2004.,Nonlinear Photonic Crystal,Fibres,Dispersion The key parameter,Material dispersion of pure silica,Dispersion of standard optical,fibres,Dispersion of simple,PCFs,Dispersion components of,PCFs,Dispersion control using pitch variation,Dispersion control using hole variation,Zero-dispersion wavelength limits,Operational range of simple HNL-PCF,First Single-mode 800 nm,Fibres,Fibres,for 1060 nm operation(YAG,syst,.),The nonlinear telecom,fibre,First PCF with zero,disp,.at 1550 nm,First PCF with zero,disp,.at 1550 nm,Dispersion Slope Control,Hybrid triangular core design:NL-PCF,Hybrid triangular core design:NL-PCF,800 nm,Polarisation,Maintaining,Fibre,800 nm,Polarisation,Maintaining,Fibre,800 nm,Polarisation,Maintaining,Fibre,Applications of,supercontinuum,Hybrid,microstructured,fibres,Thermotropic,Liquid Crystals,Liquid Crystal PBG,Fibres,Liquid Crystal PBG,Fibres,Simulation of,LCPBGs,Linear response of,PBGs,I,Linear response of,PBGs,II,Nonlinear response of,PBGs,I,Nonlinear response of,PBGs,II,Nonlinear response of,PBGs,III,Nonlinear response of,PBGs,IIII,E-field controlled field controlled,nematic,nematic,liquid crystals liquid crystals,Experimental setup,Transmission properties I,Transmission properties II,Response times,Optical modulation in dye doped,nematic,LCPCFs,Dynamics of optically tuned,LCPCFs,Summary,