Abstract

A simple fabrication method of micro/nano-optical fibers (MNOFs) based on near-field melt electrospinning (NMES) is proposed in this Letter. Single fibers with diameters ranging from 500 nm to 6 μm were directly written by near-field electrospinning of molten poly(methyl methacrylate) (PMMA). The morphology and transmission characteristics of single PMMA MNOFs were experimentally measured. The results showed that PMMA MNOFs have the advantages of smooth surfaces, uniform diameters, and low loss. As an example of one-step fabrication for MNOF devices, a planar helical MNOF structure was directly written and optically characterized. To demonstrate the versatility of the NMES process, in combination with the microfluidic technique, a liquid refractive index-sensing chip was fabricated and tested. Our results demonstrate that the proposed fabrication method has strong potential in the direct writing of patterned optical devices and heterogeneous integrated devices.

© 2017 Optical Society of America

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