Low reflectance internal mirrors

Abstract

Summary form only given. An internal mirror in a continuous length of optical fiber has been a basic component for a variety of devices in optical fiber communication systems. Hence, some kinds of internal mirrors have been fabricated, but none of them was low reflectance internal mirror with low insertion loss. Low reflectance mirrors with low insertion loss were produced using mechanical splices and pieces of fiber coated with a TiO/sub 2/ film. These mirrors can be used as partial reflectors in the optical fiber transversal filters. The fabrication procedures of internal mirrors is presented.