基于Thue-Morse序列准周期光子晶体的全光二极管现象  

All-Optical Diode Action in Quasi-Periodic Photonic Crystals Based on Thue-Morse Sequence

作　　者：陈宪锋[1] 薛峰[1] 汪萨克[1] 唐斌[1] 

机构地区：[1]常州大学数理学院,江苏常州213164

出　　处：《激光与光电子学进展》2013年第1期176-179,共4页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61107055);江苏省自然科学基金(BK2011229)资助课题

摘　　要：利用传输矩阵法研究了Thue-Morse序列准周期光子晶体的传播特性。线性结构的共振谱具有自相似的分形结构,共振模在晶体中的电场分布也具有类似的自相似结构。对于具有Kerr非线性的奇数阶Thue-Morse序列结构,由于其内部电场分布的不对称性,可以导致正反向入射时不同的双稳态现象。通过额外的抽运光激励,可以实现某光强的光单向透射,使得结构真正体现全光二极管的功能。The propagation of light waves in quasi-periodic photonic crystals based on the Thue-Morse sequence is investigated by the transfer matrix method. The linear transmission spectrum of such photonic structures exhibits a fractal nature of self-similar pattern, so as the electric field distribution. If the order number of Thue-Morse sequence is odd, the electric-field profile in the quasicrystal is asymmetric. In the case of Kerr nonlinearity, this will result in different bistability sensitive to the propagation direction. Under a certain condition, the light wave can unidirectionally transmit with external pump-assisting. This provides the realization of all-optical diode.

关 键 词：非线性光学 传输矩阵 自相似 双稳态 光学二极管 

分 类 号：O437[机械工程—光学工程]