激光技术
激光技術
격광기술
LASER TECHNOLOGY
2013年
6期
742-746
,共5页
光电子学%缺陷模频移%传输矩阵法%材料色散
光電子學%缺陷模頻移%傳輸矩陣法%材料色散
광전자학%결함모빈이%전수구진법%재료색산
optoelectronics%frequency shift of defect modes%transfer matrix method%material dispersion
为了分析材料色散对缺陷模的影响,对色散材料采用洛伦兹振子模型,利用传输矩阵法计算了含缺陷1维光子晶体的透射谱,分析了各层的色散对该结构1维光子晶体缺陷模的影响。结果表明,无论是高、低折射率介质还是缺陷层的色散都可以引起缺陷模的频移或分裂;缺陷模的频移方向与考虑色散后光学厚度的变化有关,如果光学厚度增大,则发生红移,反之则发生蓝移;低折射率介质的色散使缺陷模频移的效果最显著。这一结果对光子晶体的设计和研究有一定的参考价值。
為瞭分析材料色散對缺陷模的影響,對色散材料採用洛倫玆振子模型,利用傳輸矩陣法計算瞭含缺陷1維光子晶體的透射譜,分析瞭各層的色散對該結構1維光子晶體缺陷模的影響。結果錶明,無論是高、低摺射率介質還是缺陷層的色散都可以引起缺陷模的頻移或分裂;缺陷模的頻移方嚮與攷慮色散後光學厚度的變化有關,如果光學厚度增大,則髮生紅移,反之則髮生藍移;低摺射率介質的色散使缺陷模頻移的效果最顯著。這一結果對光子晶體的設計和研究有一定的參攷價值。
위료분석재료색산대결함모적영향,대색산재료채용락륜자진자모형,이용전수구진법계산료함결함1유광자정체적투사보,분석료각층적색산대해결구1유광자정체결함모적영향。결과표명,무론시고、저절사솔개질환시결함층적색산도가이인기결함모적빈이혹분렬;결함모적빈이방향여고필색산후광학후도적변화유관,여과광학후도증대,칙발생홍이,반지칙발생람이;저절사솔개질적색산사결함모빈이적효과최현저。저일결과대광자정체적설계화연구유일정적삼고개치。
In order to study influence of material dispersion on defect modes of 1-D photonic crystal , the transmission spectrum of the 1-D photonic crystal with dispersive material was calculated based on optical transmission matrix , and the dispersive material was described by the Lorentz oscillator model .The effect of material dispersion on defect modes of photonic crystals was analyzed .The results show that whether the dispersion of high and low refractive index medium or the dispersion of defect will bring frequency shift or splitting of defect modes ;the defect mode will bring red-shift if the optical thickness of dispersive medium is thicker than the thickness of common medium , and the defect mode will bring blue-shift when the optical thickness of dispersive medium is thinner than the thickness of common medium ;the most obvious effect of frequency shift of defect modes results from the dispersion of low refractive index medium .The results have certain reference value to the design and research of photonic crystal .