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Optical fiber lens with parabolic effective index profile fabricated using focused ion beam

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We fabricate a graded-index lens on the tip of a single-mode optical fiber for fiber-to-waveguide coupling, using focused ion beam milling. The lens focuses a 10.4 µm mode into a beam size of 3.4 µm, at a wavelength of 1550 nm.

© 2016 Optical Society of America

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