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A microscopic 3D-printed lens has been put over the end of an optical fiber for focusing the fiber-guided light.

Here, short pieces of graded-index and multimode fibers, only fractions of a millimeter long, have been spliced onto a single-mode fiber. Fiber lengths deviate ...

Two and four 3D-printed membranes stacked on top of a fiber mirror for collective optomechanical coupling to a fiber cavity.

Close-up of the central part with the actual cavity (length ~80 µm).

Fiber micromachining setup.

Fiber cavity with membrane on the left fiber mirror.

Loop antenna realized on an optical fiber; the fiber diameter is 125 µm.

Rectangular membrane (scanning electron microscope image).

Single loop microwave near-field antenna design for driving magnetic dipole transitions of atoms and ions.