7 March 2014 Sustainable UV-curable low refractive index resins with novel polymers for polymer cladding materials
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Abstract
Low refractive index polymers are used as cladding materials for high numerical aperture (NA) fibers. Since transparent fluoro polymers are ideal for this application, they have been used over many years. However, some fluoro chemicals face an issue related to perfluoro octanoic acid (PFOA) which is caused by its longtime persistence in the environment and human body. In this research, non-PFOA type UV curable fluoro resins suitable for cladding were developed with novel materials. The cured films showed high transparency, good adhesion to glass and low refractive index of 1.359 and 1.386 at 850 nm. Optical fibers prepared with those cladding showed almost equivalent attenuation to a fiber with commercially available material.
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Hiroki Tokoro, Hiroki Tokoro, Takako Ishikawa, Takako Ishikawa, Nobuyuki Koike, Nobuyuki Koike, Yohzoh Yamashina, Yohzoh Yamashina, } "Sustainable UV-curable low refractive index resins with novel polymers for polymer cladding materials", Proc. SPIE 8983, Organic Photonic Materials and Devices XVI, 89831O (7 March 2014); doi: 10.1117/12.2040913; https://doi.org/10.1117/12.2040913
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