NDLI: Development and analysis of electric field sensor using LiNbO/sub 3/ optical modulator

Content Provider	IEEE Xplore Digital Library
Author	Kuwabara, N. Tajima, K. Kobayashi, R. Amemiya, F.
Copyright Year	1964
Abstract	The sensitivity of an electromagnetic field sensor which uses a LiNbO/sub 3/ electrooptical crystal and an optical-fiber link is improved by using a Mach-Zehnder interferometer, whose half-wave voltage is about 4 V at 1.3- mu m wavelength, and a YAG laser pumped by a laser diode whose output power is 25 mW. The resulting frequency response is about flat from 100 Hz to 300 MHz, and the minimum detectable electric field strengths are 0.22 mV/m at 50 MHz and 0.079 mV/m at 750 MHz. The variation of the sensitivity with the frequency and element length are analyzed using the moment method, and the calculated results agree with the measured results. The measurement of the cross-polarization of the sensor indicates that this property is similar to that of a dipole antenna. The improved sensor can measure an electromagnetic impulse whose peak value is larger than 10 V/m and whose width is wider than 5 ns.<>
Sponsorship	IEEE Electromagnetic Compatibility Society
Starting Page	391
Ending Page	396
Page Count	6
File Size	577820
File Format	PDF
ISSN	00189375
Volume Number	34
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1992-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Antenna measurements Electromagnetic measurements Optical sensors Electromagnetic fields Electrooptic devices Optical interferometry Optical pumping Voltage Lasers and electrooptics Power lasers
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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