Compact all-fiber Bessel beam generator based on hollow optical fiber combined with a hybrid polymer fiber lens.
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.
Fraunhofer Institute, Applied Optics and Precision Engineering, Albert Einstein Strasse 7, D-07745 Jena, Germany.
Jun Ki
JK
Kim
Jongki
J
Kim
Yongmin
Y
Jung
Woosung
W
Ha
Yoon Seop
YS
Jeong
Sejin
S
Lee
Andreas
A
Tünnermann
K
K
Oh