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Achievement of large spot size and long collimation length using UV curable self-assembled polymer lens on a beam expanding core-less silica fiber

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5 Author(s)
Kim, J. ; Dept. of Inf. & Commun., Gwangju Inst. of Sci. & Technol., South Korea ; Han, M. ; Chang, S. ; Lee, J.W.
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We report a novel three-segmented fiber-collimator using self-assembled fluorinated polymer lens and a beam expanding coreless silica fiber of 200-μm diameter spliced to single-mode optical fiber. Both numerical and experimental analyses are presented for design, fabrication, and optical characterization of the device. We have obtained a working distance over 6 mm and a stable spot size over 50 μm in a wide wavelength range of 1.51-1.59 μm.

Published in:

Photonics Technology Letters, IEEE  (Volume:16 ,  Issue: 11 )