Nayak K P, Le Kien Fam, Kawai Y, Hakuta K, Nakajima K, Miyazaki H T, Sugimoto Y
Center for Photonic Innovations, University of Electro-Communications, Tokyo, Japan.
Opt Express. 2011 Jul 18;19(15):14040-50. doi: 10.1364/OE.19.014040.
We present the experimental realization of nanofiber Bragg grating (NFBG) by drilling periodic nano-grooves on a subwavelength-diameter silica fiber using focused ion beam milling technique. Using such NFBG structures we have realized nanofiber cavity systems. The typical finesse of such nanofiber cavity is F ∼ 20 - 120 and the on-resonance transmission is ∼ 30 - 80%. Moreover the structural symmetry of such NFBGs results in polarization-selective modes in the nanofiber cavity. Due to the strong confinement of the field in the guided mode, such a nanofiber cavity can become a promising workbench for cavity QED.
我们展示了通过聚焦离子束铣削技术在亚波长直径的石英光纤上钻出周期性纳米凹槽来实现纳米光纤布拉格光栅（NFBG）的实验方法。利用这种NFBG结构，我们实现了纳米光纤腔系统。这种纳米光纤腔的典型精细度为F ∼ 20 - 120，共振传输率约为30 - 80%。此外，这种NFBG的结构对称性导致纳米光纤腔中出现偏振选择模式。由于导模中场的强限制，这种纳米光纤腔有望成为腔量子电动力学的实验平台。
