Micro Fresnel Zone Plate Lens Inscribed on a Hard Polymer Clad Fiber Using Femtosecond Pulsed Laser

We report a novel process to directly inscribe a Fresnel zone plate (FZP) lens on the cleaved facet of a hard clad polymer fiber using a femtosecond pulsed laser. The FZPs are designed by adopting modal analysis and free-space diffraction, which are experimentally implemented by locally ablating sil...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 25; no. 8; pp. 761 - 763
Main Authors Kim, Jongki, Ha, Woosung, Park, Jiyoung, Kim, Jun Ki, Sohn, Ik-Bu, Shin, Woojin, Oh, Kyunghwan
Format Journal Article
LanguageEnglish
Published IEEE 15.04.2013
Subjects
Beam shaping
Fiber lasers
Fresnel zone plate
laser ablation
Laser beams
lensed fiber
Lenses
Measurement by laser beam
Optical fiber devices
Optical fibers
Ultrafast optics
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Summary:We report a novel process to directly inscribe a Fresnel zone plate (FZP) lens on the cleaved facet of a hard clad polymer fiber using a femtosecond pulsed laser. The FZPs are designed by adopting modal analysis and free-space diffraction, which are experimentally implemented by locally ablating silica glass using femtosecond laser pulses. A good agreement between the design and fabricated FZP lens is obtained with an exceptionally long focal length over 600 m, which can have a strong potential in all-fiber beam shaping technology and optical interconnections.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2013.2249506