论文部分内容阅读
光子局域化是光子晶体的重要性质,提出采用相干背散射法对微结构光纤(MOFs)进行测量,为了便于理解并解释光子局域化的理论,在可见光波段分别测量了石英晶体、集束式微结构光纤和双芯型微结构光纤,应用光波经典扩散理论,搭建了实验平台。实验结果表明,对石英晶体的探测没有发现相干现象,而在575 nm左右微结构光纤中产生了很强的干涉。分析认为是由于二维微结构光纤的端面中分布着从节区到脉区变化的周期结构,尺寸约为500~600 nm,相当于一些不连续的散射粒子,当入射575 nm光波长和这些粒子的尺寸相接近时,满足了光子局域化的条件,便产生了强烈的背相散射相干现象。
Photon localization is an important property of photonic crystals. The measurement of microstructured optical fibers (MOFs) by coherent backscattering is proposed. In order to facilitate the understanding and interpretation of photon localization theory, quartz crystals, Structure optical fiber and double-core microstructure optical fiber, the application of classical theory of light diffusion, set up an experimental platform. The experimental results show that there is no coherent phenomenon detected in the quartz crystal, and strong interference occurs in the microstructure fiber of about 575 nm. It is considered that the periodic structure of the two-dimensional microstructured fiber varies from nodal region to pulse region in the end face. The size is about 500-600 nm, which is equivalent to some discontinuous scattering particles. When the incident wavelength of 575 nm light and these When the size of the particles is close to each other, the condition of photon localization is satisfied, and strong backscattering coherent phenomenon is produced.