THE IMPROVEMENT OF THE PERFORMANCES OF AMPLITUDE MODULATED OPTICAL FIBRE SENSORS BY USING OPTICAL COMPENSATION TECHNIQUES

摘要

The metiological performances of the amplitude modulated optical fibre sensors may be improved using compensation techniques. The paper presents the performances of an opto-electronic compensation method. Two optical signals related to the measurand, generated in a new configuration sensing head, allow the use of a ratiometric technique in the electronic section of the sensor. A small displacement sensor using the compensation technique has been built and tested. The experimental results confirm the theoretical predictions.