This volume considers aspects of the theory of polymers applied in optics. The main factors affecting the light loss in polymeric wave beam guides (PG) are discussed, and the mechanism of light loss in PG is analyzed. Polymers applied in fibre optics are classified with reference to methods of fabrication and purification of the materials. Technological aspects of material fabrication are considered, together with kinetic aspects of polymerization. Updated information on polymerization kinetics of MMA and styrene, and copolymerization of these monomers with each other is reported. Other topics discussed in this book are heterogeneity of optic co-polymers, association between structure and reactivity of monomers, other properties of optic co-polymers and areas of their commercial application. This book should be of value and interest to anyone working in the field of optic polymers, both in academia and industry.