3D nanoprinted fan-in/fan-out device connects multicore fiber with low loss and crosstalk
jwt0625 · x · 2026-11-11
A 2026 paper demonstrates in-situ two-photon 3D nanoprinting of a fan-in/fan-out device on a custom fiber array end-face: 8 single-core fibers around a four-core multicore fiber, linked by 60μm parabolic TIR bridges. The packaged device shows low insertion loss across 1450–1650nm and crosstalk down to -70dB. The poster also mocks the paper's unreadable 3D bar plots for what is essentially matrix data.
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