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 μm maintained over a propagation distance of 550 μm. 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.
© 2009 Optical Society of America
Diffraction and Gratings
Original Manuscript: May 26, 2009
Revised Manuscript: August 26, 2009
Manuscript Accepted: September 1, 2009
Published: September 24, 2009
Jun Ki Kim, Jongki Kim, Yongmin Jung, Woosung Ha, Yoon Seop Jeong, Sejin Lee, Andreas Tünnermann, and K. Oh, "Compact all-fiber Bessel beam generator based on hollow optical fiber combined with a hybrid polymer fiber lens," Opt. Lett. 34, 2973-2975 (2009)