A splicing and inspection technique for single-mode fibers using direct core monitoring

A basic study has been made of single-mode fiber splicing techniques using direct core monitoring, which includes a highly accurate axis alignment and a post-inspection technique to guarantee the splice-loss standards. The standard conformance reliability, taking into account the core detection uncertainty, was studied by statistical theory. A method for setting acceptance criteria and necessary core detection accuracy has been established. Splice loss due to parameter mismatch, which cannot be estimated by core monitoring, was also examined.