Radiation from Concave Optical Fiber Tips Fabricated by Laser Induced Photothermal Effects

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We present a simple method to fabricate concave surface at the optical fiber's end facet. Radii of etched surface curvature at the fiber tips can be controlled by the derived photothermal effects from a guided laser beam. The self-aligned concave surfaces are created by the temperature-dependent wet etching process at the end of the cleaved fiber facet. The fabricated concave shapes were verified by measuring the free space optical beam radiation divergence profiles using a beam profiler, which show good correlation with the applied optical power during the etching process.
Publisher
IEEE
Issue Date
2018-10-23
Language
Korean
Citation

2018 International Symposium on Antennas and Propagation (ISAP)

URI
http://hdl.handle.net/10203/262989
Appears in Collection
EE-Conference Papers(학술회의논문)
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