一、前言在通信方面,最近正积极开展采用光纤维和半导体发光元件的光通信系统研究。随着研究的深入,现已制出具有高可靠性的光纤维和发光元件,并可使之组合成测量装置。特别是光纤维具有不受电场影响、不放电、对电绝缘 I. INTRODUCTION In communications, the optical communication system using optical fiber and semiconductor light-emitting elements has recently been actively researched. With the deepening of research, optical fibers and light-emitting elements having high reliability have now been manufactured and can be combined into a measuring device. In particular, optical fiber is not affected by electric field, no discharge, and electrical insulation