Title :
A new electro-optical method for recovering white light interferometric signals
Author :
Santos, Josemir C. ; Cortes, André L.
Author_Institution :
Dept. of Electr. Energy & Autom. Eng., Sao Paulo Univ., Brazil
Abstract :
This paper introduces a new electro-optical method for recovering the interferometric signal from a white light interferometer (WLI). In this method the recover interferometer consists on a birefringent polarimetric interferometer, which is a Pockels cell especially designed to match the optical path difference generated at the sensor interferometer in a large number of wavelengths. Such method can provide a fast, precise and flexible way to interrogate any kind of WLI sensor. This gaper describes the principles of this method applied to an angular position sensor. The obtained results for this sensor are here presented and shown an accuracy of X%
Keywords :
Pockels effect; light interferometers; optical sensors; Pockels cell; angular position sensor; birefringent polarimetric interferometer; electro-optical method; optical sensor; signal recovery; white light interferometry; Optical fiber sensors; Optical fibers; Optical interferometry; Optical sensors; Phase measurement; Power measurement; Sensor arrays; Strain measurement; Temperature sensors; Wavelength measurement;
Conference_Titel :
Microwave and Optoelectronics Conference, 1999. SBMO/IEEE MTT-S, APS and LEOS - IMOC '99. International
Conference_Location :
Rio de Janeiro
Print_ISBN :
0-7803-5807-4
DOI :
10.1109/IMOC.1999.867078
