Reinforced optical fiber and production of the same

Abstract From the Canadian patent

The reinforced optical fiber is disclosed which has a feature in its structure that a reinforcing inner layer is interposed between the buffer layer of silicon rubber and the FRP layer made of styrene resin and fibers. The reinforcing inner layer is formed by binding filaments attached longitudinally onto the buffer layer with a non-styrene resin. Not only does the additional reinforcing inner layer improves the crushing resistance, but also it keeps low the increase of transmission loss. The feature of the method resides in that the reinforcing inner layer directly covering the buffer layer is formed by the steps of longitudinally attaching dry filaments to the buffer layer and then …