Transmission characteristics are studied for the hybrid structures combining defect and multiple heterostructures. It is shown that the non-transmission frequency range can be substantially enlarged and the phenomenon...Transmission characteristics are studied for the hybrid structures combining defect and multiple heterostructures. It is shown that the non-transmission frequency range can be substantially enlarged and the phenomenon of narrow band-pass filter can be realized by adjusting the number, position and size of the defect. The theoretical and experimental results on heterostructures containing Ta2O5/SiO2 multilayer films are presented. With perfect non-transmission frequency range and high peak transmissivity, this structure opens a promising way to fabricate ultra-narrow band-pass filters with wide non-transmission frequency range.展开更多
Triple-periodical photonic crystal heterostructures （ABC）^N for multichannel ultranarrow transmission filters are designed and demonstrated. Theoretical calculations and experimental results from TiO2/SiO2 construct...Triple-periodical photonic crystal heterostructures （ABC）^N for multichannel ultranarrow transmission filters are designed and demonstrated. Theoretical calculations and experimental results from TiO2/SiO2 constructed heterostructures show that each transmission channel can reach subnanometre scale, implying technical importance of such structures in the fields of integrated optics, optical communications for the design of high-performance multichannel filters, wavelength division multiplexing （WDM） and dense wavelength division multiplexing （DWDM） systems, etc.展开更多
文摘Transmission characteristics are studied for the hybrid structures combining defect and multiple heterostructures. It is shown that the non-transmission frequency range can be substantially enlarged and the phenomenon of narrow band-pass filter can be realized by adjusting the number, position and size of the defect. The theoretical and experimental results on heterostructures containing Ta2O5/SiO2 multilayer films are presented. With perfect non-transmission frequency range and high peak transmissivity, this structure opens a promising way to fabricate ultra-narrow band-pass filters with wide non-transmission frequency range.
基金Supports by the National Natural Science Foundation of China under Grant No 60278018, the Knowledge Innovation Project of Wuhan University （[2002]12）, and NCET （04-0678）.
文摘Triple-periodical photonic crystal heterostructures （ABC）^N for multichannel ultranarrow transmission filters are designed and demonstrated. Theoretical calculations and experimental results from TiO2/SiO2 constructed heterostructures show that each transmission channel can reach subnanometre scale, implying technical importance of such structures in the fields of integrated optics, optical communications for the design of high-performance multichannel filters, wavelength division multiplexing （WDM） and dense wavelength division multiplexing （DWDM） systems, etc.
