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Volume 25 - ICOP & ICPET 2019
ICOP & ICPET _ INPC _ ICOFS 2019, 25 - ICOP & ICPET 2019: 333-336 |
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Amiri H, Sedighi banaei S, Zibaei M E, Yavari N. Investigation and Modelling of Optical Voltage Sensor Based on LiNbO3 Crystal in Two Different cutting Directions. ICOP & ICPET _ INPC _ ICOFS 2019; 25 :333-336
URL: http://opsi.ir/article-1-1808-en.html
URL: http://opsi.ir/article-1-1808-en.html
1- Instrumentation Department, Niroo Research Institute, Dadman St, Tehran, Iran
2- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran
2- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran
Abstract: (2384 Views)
A fiber-optic voltage sensor based on the transverse Pockels effect in the x and z cut LiNbO3 crystals where the optical path was parallel to z and y axis, respectively, is defined and the outstanding temperature stability of within 0℃ to 100℃ is investigated in two directions. The simulated comparison between the temperature sensitivity of the sensor based on the Pockels effect in x-cut LiNbO3 bulk crystal with optical path parallel to z-axis is less than the y propagated, z-cut LiNbO3 crystal where the temperature variation of the transfer function in this temperature range is fractional, linear and in the order of 10-4. However, in the z-cut crystal Pockels cell the output of the sensor is sinusoidal and in the order of 1. Therefore, the use of a fiber-optic voltage sensor based on z propagated, x-cut LiNbO3 crystal demonstrates temperature stability of ±0.01% from 0℃ to 100℃ compared with the y propagated, z-cut bulk LiNbO3 crystal.
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