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Integrated optical waveguide electric field sensor and electric field measurement system utilizing same

An integrated optical waveguide and sensor technology, applied in the direction of electrostatic field measurement, etc., can solve the problems that cannot meet the requirements of transient electric field measurement, and achieve the effect of ensuring miniaturization

Active Publication Date: 2018-11-27
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing integrated optical waveguide field sensor can no longer meet the measurement requirements of this kind of transient electric field, especially the low-frequency response needs to be further improved

Method used

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  • Integrated optical waveguide electric field sensor and electric field measurement system utilizing same
  • Integrated optical waveguide electric field sensor and electric field measurement system utilizing same
  • Integrated optical waveguide electric field sensor and electric field measurement system utilizing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: as Figure 1-4 As shown, an integrated optical waveguide field sensor includes a lithium niobate chip 1, a modulation electrode 3, a dipole antenna 4, a planar spiral inductor 5, and an ultraviolet curing glue 6;

[0030] in one piece x cut y An integrated optical waveguide Mach-Zehnder interferometer 2 composed of an input Y-shaped optical waveguide, a straight waveguide arm, and an output Y-shaped optical waveguide is manufactured on the surface of the lithium niobate wafer 1, and the integrated optical waveguide Mach-Zehnder interferometer 2 Modulating electrodes 3 are made on both sides of the two straight waveguide arms or on both sides of one of the straight waveguide arms; a dipole antenna 4 and a planar spiral inductor 5 are made on the surface of another lithium niobate wafer 1, and one end of the planar spiral inductor 5 is directly connected to the The dipole antenna 4 is connected, and the other end is connected to the modulation electrode 3 ...

Embodiment 2

[0048] Embodiment 2: as Figure 5 As shown, the difference between this embodiment and embodiment 1 is that the structure of the modulation electrode 3 is different. Two parallel electrode sheets and a parallel electrode arranged between the two straight waveguide arms of the integrated optical waveguide Mach-Zehnder interferometer 2, two parallel electrodes arranged outside the two straight waveguide arms of the integrated optical waveguide Mach-Zehnder interferometer 2 The plates are connected together through the connecting electrode sheet and then connected to the planar spiral inductor 5 on the left side through the connecting wire 7, and a piece of parallel electrode arranged between the two straight waveguide arms of the integrated optical waveguide Mach-Zehnder interferometer 2 is connected to the wire through the connecting electrode sheet 7 is connected with the planar spiral inductor 5 on the right side.

Embodiment 3

[0049] Embodiment 3: as Image 6 As shown, the difference between this embodiment and Embodiment 1 is that the structure of the modulation electrode 3 is different. In this embodiment: specifically, the modulation electrode 3 includes one of the integrated optical waveguide Mach-Zehnder interferometers 2 The two parallel electrode sheets on both sides of the straight waveguide arm are arranged on the inside of the straight waveguide arm of the integrated optical waveguide Mach-Zehnder interferometer 2. The parallel electrode sheet is connected to the plane spiral inductor 5 on the right after connecting the electrode sheet to the connecting wire 7. The parallel electrode sheet outside the straight waveguide arm of the integrated optical waveguide Mach-Zehnder interferometer 2 is connected to the planar spiral inductor 5 on the left after connecting the electrode sheet connection wire 7 .

[0050] figure 2 , Figure 5 , Image 6 The characteristic of the modulation electrod...

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Abstract

The invention relates to an integrated optical waveguide electric field sensor and an electric field measurement system utilizing the same, and belongs to the technical field of electric field measurement. The electric field sensor provided by the invention is that an integrated optical waveguide Mach-Zehnder interferometer and a modulation electrode are manufactured on the surface of a lithium niobate wafer; a dipole antenna and a planar spiral inductor are manufactured on the surface of another lithium niobate wafer; the side surfaces of the two lithium niobate wafers are adhered together byusing an ultraviolet curing adhesive; the bottom surfaces of the two lithium niobate wafers are respectively adhered with retaining washers by using the ultraviolet curing adhesive; and the planar spiral inductor and the modulation electrode are connected by using a connecting wire. The electric field measurement system utilizing the integrated optical waveguide electric field sensor comprises apolarization-maintaining laser source, a polarization-maintaining optical fiber, the integrated optical waveguide electric field sensor, a single-mode optical fiber, a photoelectric detector, a transmission cable and a signal processing unit. The integrated optical waveguide electric field sensor provided by the invention can realize low-frequency electric field measurement through designing a planar spiral inductor loaded antenna.

Description

technical field [0001] The invention relates to an integrated optical waveguide field sensor and an electric field measurement system utilizing the same, belonging to the technical field of electric field measurement. Background technique [0002] With the construction and implementation of ultra-high voltage and ultra-high voltage power transmission and transformation projects in my country, the voltage level continues to rise, and the requirements for the insulation performance of various electrical equipment continue to increase. In order to better design the insulation parameters of electrical equipment, it is necessary to measure and study gap discharge electric fields, corona electric fields, and fast transient overvoltages that appear in the field of high-voltage engineering. The integrated optical waveguide field sensor based on integrated optical technology has the advantages of fast response, wide frequency band, little interference to the measured electric field, ...

Claims

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Application Information

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IPC IPC(8): G01R29/14
CPCG01R29/14
Inventor 张家洪杨秀梅万小容李英娜赵振刚李川
Owner KUNMING UNIV OF SCI & TECH
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