CAJ | 학술논문

采用传输矩阵法，通过编程计算模拟双负材料光子晶体（ AB） m BCB（ BA） m 的透射谱，研究介质光学厚度对光子晶体带宽的调制机制，结果发现：当分别增大A或B介质层的光学厚度时，光子晶体的透射能带谱均向低频方向移动，且透射峰带宽均逐渐变窄，但透射峰的透射率保持100％不变；当C介质层光学厚度按负值减小时，光子晶体的透射能带谱则向高频方向移动，而透射峰的带宽也变窄且透射率保持100％；相对而言，B介质层光学厚度对带宽的调制最灵敏，A层次之，而C层最弱。介质光学厚度对双负材料一维光子晶体透射峰带宽的调制功能，为设计不同频率或波长范围的窄带滤波器、光开关等光学器件提供理论基础和现实指导意义。
채용전수구진법，통과편정계산모의쌍부재료광자정체（ AB） m BCB（ BA） m 적투사보，연구개질광학후도대광자정체대관적조제궤제，결과발현：당분별증대A혹B개질층적광학후도시，광자정체적투사능대보균향저빈방향이동，차투사봉대관균축점변착，단투사봉적투사솔보지100％불변；당C개질층광학후도안부치감소시，광자정체적투사능대보칙향고빈방향이동，이투사봉적대관야변착차투사솔보지100％；상대이언，B개질층광학후도대대관적조제최령민，A층차지，이C층최약。개질광학후도대쌍부재료일유광자정체투사봉대관적조제공능，위설계불동빈솔혹파장범위적착대려파기、광개관등광학기건제공이론기출화현실지도의의。
Modulation of the optical thickness of medium on transmission bandwidths of the double negative photonic crystal peaks is studied by using the transfer matrix and numerical simulation method.The results show that when A or B-layer of the optical thickness of medium increases, the transmission of photonic crystal band spectrum shifts to lower frequency, though the bandwidths of transmission peaks gradually narrow, the transmittance of transmission peak is 100%;when C-layer of the optical thickness of medium reduces, the transmission of pho-tonic crystal band spectrum will move to higher frequency; and the transmittance of the transmission peak is also 100%with the gradually narrowed bandwidth of transmission peaks.In other words, among the modulation of the optical thickness of medium on transmission bandwidths, B-layer is the most sensitive, A-layer is the second, and C-layer is the weakest.The paper provides basic theory and instructive significance to the design of different frequency or wavelength ranges of narrow band filters, optical devices such as optical switch and the like.