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Electric field sensing system using coherence modulation of light

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3 Author(s)
Gutierrez-Martinez, C. ; Instituto Nacional de Astrofisica, Optica, y Electronica, Tonantzintla, Mexico ; Trinidad-Garcia, G. ; Rodriguez-Asomoza, J.

This paper describes an experimental setup for detecting electric fields using electrooptic lithium niobate (LiNbO3) sensors and coherence modulation of light. In this detection scheme, the sensed electric fields modulate optical delays, which are introduced by LiNbO3 coherence modulators when associated to low-coherence optical sources. The optical delays act as coherence-multiplexed carriers of the sensed electric fields and are transmitted through an optical fiber channel. At the receiver, the electric fields are detected by measuring the auto-correlation of the received light by using two-wave interferometers, which are matched to the introduced optical delays on the sensing devices.

Published in:

Instrumentation and Measurement, IEEE Transactions on  (Volume:51 ,  Issue: 5 )

Date of Publication:

Oct 2002

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