Plastic Optical Fiber And Method For Manufacturing The Same

摘要

A preform ( 15 ) having a clad part of PVDF and a core part of PMMA is manufactured. The preform ( 15 ) is partially heated in a heating furnace ( 74 ) of 240° C. The preform ( 15 ) is subject to the melt-drawing process to form a plastic optical fiber ( 17 ). The drawing tension to the preform ( 15 ) is measured by use of a drawing tension measure device ( 76 ). Based on the measured value, a drawing roller pair ( 78 ) adjusts the drawing tension to be 3.8 MPa. The plastic optical fiber ( 17 ) is fed via a dancer roller ( 82 ) and rollers ( 84, 86 ) toward a bobbin ( 87 ) to wind the plastic optical fiber ( 17 ). A winding tension measure device ( 85 ) measures the winding tension to the POF ( 17 ). Based on the measured value, the dancer roller ( 82 ) changes its position to adjust the winding tension to be 2.5 MPa.