Heat resisting plastic optical fiber and method for its manufacture

摘要

An optical fiber of a sheath-core structure is disclosed. The fiber has for its core a copolymer which includes an aliphatic N-substituted maleimide as a monomer unit, and preferably methyl methacrylate as an additional monomer unit. These optical fibers have high light transmittance, good mechanical characteristics and an excellent heat-resisting durability.