多光纤全息干涉法制作光子晶体

摘要

Holographic interferometry is a simple, fast method to make photonic crystals (PhCs). Multi-fiber inter-ferometery further simplifies the system configuration by leaving out the beam spliter and the beam expander. Holographic PhCs structures have been calculated for two and three-fiber interference in this paper. The effect of uneven fiber strength on the PhCs lattice structure has also been investigated. Experiment results were obtained and recorded for two and three-fiber interfering system. A good consistence was observed between the theoretical and experimental results. Moreover,based on this method,large area of PhCs with different period and size can be fabricated by precisely controlling the fiber exit location and the scanning lithography.%全息干涉法是一种结构简单、快速的光子晶体制作方法.多光纤干涉法无需使用扩束和分束装置,进一步简化了装置的构成.文中理论模拟了双光纤和三光纤干涉所形成的全息光子晶体结构,并考虑光纤强度的不均匀对光子晶体晶格结构的影响.实验上采用双光纤和三光纤干涉装置实现了光子晶体结构的观察和记录,并与理论结果进行比较,实验与理论吻合的很好.而且,在此方法的基础上,精密控制光纤出射端的位置进行扫描光刻,可以实现不同周期、不同尺寸的大面积光子晶体的制作.