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.
Kim
Jun Ki
JK
Fraunhofer Institute, Applied Optics and Precision Engineering, Albert Einstein Strasse 7, D-07745 Jena, Germany.
Kim
Jongki
J
Jung
Yongmin
Y
Ha
Woosung
W
Jeong
Yoon Seop
YS
Lee
Sejin
S
Tünnermann
Andreas
A
Oh
K
K