| 摘要 |
<p>A plastic optical fiber comprising a core polymer having a refractive index of n1, which comprises a polymer of .alpha. , .beta. -unsaturated carboxylic acid fluoroalkylester represented by the general formula ¢I! as the main monomer, and a clad copolymer having a refractive index of n2, which comprises perfluoro(2,2dimethyl-1,3-dioxole) as the main monomer, and which satisfies the relationship of (n1-n2>0.01): ¢I! wherein X represents CH3, H, D, F, C?, or CH3, Y represents H or D, and Rf represents a fluoroalkyl group having a linear or branched chain. The optical fiber is prepared by a meltextrusion method. The optical fiber has a very excellent light transmitting properties, and it is suitable as an optical fiber for long distance light communication.</p> |
