New Optical-Waveguide Pockels Sensor for Measuring Electric Fields

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概要

• 論文の詳細を見る

• An optical electric field sensor using a Pockels crystal which has the advantage of directly measuring the electric field in a space with limited disturbance of its distribution has been studied. We present an optical waveguide technique which has been developed to miniaturize the sensor. In a prototype sensor a light beam is propagated along a z-direction waveguide in a y-cut LiNbO3 crystal. The width of the waveguide is 7 µ m and its length is 4.39 mm. The sensor is not based on an interferometer but on a single waveguide. The sensor has a simple and optimum configuration, and its output has good linearity to applied electric fields. Its frequency and temperature characteristics are presented. A new and smaller sensor with a waveguide 1 mm in length has been developed. It has almost the same configuration as the prototype sensor except for a smaller size. Results of measurement of ac and step electric fields using this sensor are presented.

• INSTITUTE OF PURE AND APPLIED PHYSICSの論文
• 1996-02-15

著者

• Hidaka Kunihiko

  Department Of Electrical And Electronic Engineering Faculty Of Engineering Tokyo Institute Of Techno

• Kouno Teruya

  Department Of Electrical Engineering Tokyo University

• Takahashi Tsuguhiro

  Department of Electrical Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113, Japan

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• New Optical-Waveguide Pockels Sensor for Measuring Electric Fields

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