Abstract

In a practical Faraday current sensing system, optical fiber leads have to be deployed to deliver light from the light source to the sensing elements and to return the optically encoded signal to the photodiode, enabling the sensor to be used in applications where the current is at high potential [1]. In order to obtain a definite state of polarization (SOP) of the output light beam with a constant intensity at the end of a long fiber run, a highly birefringent (HiBi) fiber can be used as the fiber lead. With the use of a finite element analysis method, the performance of three different types of HiBi fibers, Bow-Tie type, Panda type, and elliptical type, under different pressure, and subject to different temperature changes have been studied through computer simulation. In this work, a theoretical simulation with its results are reported.

© 1994 Optical Society of America