Improving the sensitivity of electric field sensor with linbo3 electrooptic crystals by loading inductance
✍ Scribed by Kimihiro Tajima; Fujio Amemiya; Nobuo Kuwabara; Ryuichi Kobayashi
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 846 KB
- Volume
- 77
- Category
- Article
- ISSN
- 8756-6621
No coin nor oath required. For personal study only.
✦ Synopsis
Recently, with the diversification of electromagnetic compatibility (EMC) problems, the need for an electric field sensor to measure the electromagnetic pulses and the electric field near the equipment has increased greatly. An electric field sensor using LiNbO,, which has an electrooptical effect, has been used for such measurements; but the sensitivity is not satisfactory. However, the sensitivity can be improved by increasing the sensitivity of the optical modulator or by increasing the output of the optical modulator source.
As a result, it is found that the measured results show good agreement with the calculated results and the sensitivity can be improved by inductance loading. It has been confirmed that the sensitivity of the electric field sensor with element length of 150 mm could be improved by about 40 dB at 200 MHz by using the loading inductance of 600 nH.