ArticleNanophotonics (Berlin, Germany)2026
Ultra Compact and Broadband Fiber Facet Graphene Oxide Microlens Array Fabricated on a Beam-Expanding Fiber Facet Using Femtosecond Laser Direct Writing Technique.
Article in Nanophotonics (Berlin, Germany), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
We demonstrate an ultra-compact fiber facet graphene oxide (GO) microlenses array fabricated through femtosecond laser direct writing (FLDW). Taking advantage of the broadband transparency, mechanical, and laser-tunable optical properties of GO, the device realizes phase modulation in a 400 nm film, enabling multi-focus beam splitting and focusing. A coreless fiber segment is fusion-spliced to a standard single-mode fiber to expand the mode field, and a high-density array of 19 microlenses is integrated on the beam-expanding fiber facet; the device achieved focal lengths ranging from 8.0 to 9.6
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