THE EFFECT OF INTERFACIAL STRENGTH ON THE LIGHT REFRACTION IN MULTI-STEP PLASTIC OPTICAL FIBER

摘要

The effect of adhesion strength at the interface of core layers on the light refraction was determined in multi-step index plastic optical fiber (MSI-POF). The multi-step refractive index profile in MSI-POF core was introduced by the combination of various methyl methacrylate (MMA)/fluoroalkyl methacrylate (FAMA) copolymers. The refraction angle at interface decreases with increasing FAMA content in copolymers and as a result, the light in MSI-POF propagated similar to the graded index plastic optical fiber (GI-POF). Adhesion strength at the interface of copolymers affects the light transmission path in MSI-POF. This might be minimized by achieving appropriate adhesion strength at the interface between core materials.