PRODUCTION OF SENSING LOOP OF OPTICAL GYRO

摘要

PURPOSE:To improve the mass productivity by forming a single-mode light guide on the outer surface of high purity porous silica having the shape of a cylindrical tube or a column by the diffusion of an alkoxide. CONSTITUTION:A cylindrical body 1 of high purity porous silica having the shape of a cylindrical tube or a column is produced. A spiral mask 2 for a single-mode light guide is formed on the outer surface of the cylindrical body 1. The alkoxide of an element for changing the refractive index of silica or a soln. of the alkoxide is diffused in a porous body through the mask 2. The mask 2 is then stripped and the cylindrical body 1 is made dense by sintering.