Fraunhofer Institute, Applied Optics and Precision Engineering, Albert Einstein Strasse 7, D-07745 Jena, Germany.
Opt Lett. 2009 Oct 1;34(19):2973-5. doi: 10.1364/OL.34.002973.
We report a compact all-fiber Bessel beam generator using hollow optical fiber (HOF) and coreless silica fiber based on a self-assembled polymer lens. A nearly diffraction-free Bessel beam pattern was observed with its focused beam diameter of 20 microm maintained over a propagation distance of 550 microm. The generated Bessel beams were experimentally tested under various structural parameters such as the diameters of the HOF and operating wavelengths. A beam propagation method was applied to simulate the proposed device, which shows good agreement with the experimental observations.
我们报告了一种使用空心光纤（HOF）和无芯石英光纤的紧凑型全光纤贝塞尔光束发生器，其基于自组装聚合物透镜。观察到几乎无衍射的贝塞尔光束模式，其聚焦光束直径在 550 微米的传播距离内保持在 20 微米。在各种结构参数下，如 HOF 的直径和工作波长，对产生的贝塞尔光束进行了实验测试。应用光束传播法对所提出的器件进行了模拟，其与实验观察结果吻合良好。
