| Title |
The Study on The Skill Development Optical CT Using Faraday Effect |
| Authors |
Jeo-Il Jeon ; Mi-Kyoung Ahn ; Won-Ju Park ; Kwang-Sik Lee ; Jung-Bae Kim ; Min-Soo Kim |
| Keywords |
optical CT ; faraday effect ; laser diode ; optical fiber |
| Abstract |
In this paper, we took the basic experiment in order to explore the optical CT(optical cyrrent transformer) for measuring high current in a voltage condition. It is based on the faraday effect that changes the polarization characteristic of optical signals by the magnetic field. We used 1310[nm] laser diode for a light source and comprised a sensing part with the optical fiber of 5[m], 10[m], 20[m] length each. The range of current was from 400[A] to 1300[A]. We observed the characteristic of output that changes according to the length of the optical fiber composing the sensing part. The optical fiber of 5[m] length used for the sensing part had -11.1% of the maximum tatio of error and 10[m] and 20[m] length had -3.5% and 1.7% each. This means that power and linearity of output increase in proportion to the length of optical fiber and applied current in the same experimental condition. |