Dip coating of thin polymer optical fibers

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Date
2021
Volume
66
Issue
Journal
Optical Fiber Technology : Materials, Devices, and Systems
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Publisher
Orlando, Fla. : Academic Press
Abstract

To produce polymer optical fibers in research environments, a flexible cladding material-application process is required. Further, to functionalize the waveguide, the fiber core-production step needs to be separated from the cladding application, contrasting conventional polymer optical fiber production processes. In this study, we developed a solution using continuous dip-coating technique to apply cladding material onto previously extruded polymer optical fiber cores with diameters as low as 16 µm. The process was designed considering the fluid-dynamic behavior of the cladding material and fiber to achieve a radially symmetric coating thickness. We examined UV-curable resin as cladding and polymethyl-methacrylate (PMMA)-based extruded optical fibers with diameters of up to 16 µm. The proposed method helped continuously coat optical fiber cores with cladding material with diameters in the range of 1 mm and achieve the lowest optical attenuation (<3 dB/m).

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License
CC BY 4.0 Unported