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Sensors 2011, 11(1), 806-824; doi:10.3390/s110100806
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Recent Advances in the Design of Electro-Optic Sensors for Minimally Destructive Microwave Field Probing

1,* , 1
,
2
,
2
 and
3
1 Division of Physical Metrology, Korea Research Institute of Standards and Science, Yuseong-gu, Daejeon 305-340, Korea 2 The 4th R&D Institute, Agency for Defense Development, Yuseong-gu, Daejeon 305-600, Korea 3 Center for Ultrafast Optical Science, Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI 48109-2099, USA
* Author to whom correspondence should be addressed.
Received: 8 December 2010 / Revised: 4 January 2011 / Accepted: 11 January 2011 / Published: 12 January 2011
(This article belongs to the Section Physical Sensors)
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Abstract

In this paper we review recent design methodologies for fully dielectric electro-optic sensors that have applications in non-destructive evaluation (NDE) of devices and materials that radiate, guide, or otherwise may be impacted by microwave fields. In many practical NDE situations, fiber-coupled-sensor configurations are preferred due to their advantages over free-space bulk sensors in terms of optical alignment, spatial resolution, and especially, a low degree of field invasiveness. We propose and review five distinct types of fiber-coupled electro-optic sensor probes. The design guidelines for each probe type and their performances in absolute electric-field measurements are compared and summarized.
Keywords: microwave measurement; electro-optic measurement; optical sensing; sensors microwave measurement; electro-optic measurement; optical sensing; sensors
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Lee, D.-J.; Kang, N.-W.; Choi, J.-H.; Kim, J.; Whitaker, J.F. Recent Advances in the Design of Electro-Optic Sensors for Minimally Destructive Microwave Field Probing. Sensors 2011, 11, 806-824.

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