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Abstract: A novel lensed fiber employing a quadrangular-pyramid-shaped fiber endface (QPSFE) is proposed. This QPSFE can form any different aspect ratios of elliptical microlens to match the far field ...

Abstract: We propose a novel quasi-ellipsoidal microlens employing a quadrangular-pyramid-shaped fiber endface (QPSFE) for the coupling between high-power 980 nm laser diodes and single mode fibers.

A compact and high-precision three-degrees-of-freedom (DOF; X, Y, and Z directions) grating encoder based on the quadrangular frustum pyramid (QFP) prisms is proposed in this paper to solve the ...