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Sensitivity Enhancements to Photonic Electric Field Sensor

机译：光子电场传感器的灵敏度增强

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This paper describes an electrode-less, all-optical, wideband electric field sensor fabricated in an electro-optic lithium niobate substrate. The sensor component is an integrated optic Mach-Zehnder interferometer. The electric field sensor uses the electro-optic properties of lithium niobate to modulate the phase of the light propagating in each arm of the Mach-Zehnder interferometer. The phase modulated light is then converted to intensity modulation at the output of the interferometer. The unique feature of the sensor device is that the orientation of the crystal in one arm of the Mach-Zehnder interferometer is inverted to provide push-pull optical modulation for an applied electric field. Optical fibers are connected to the input and output of the sensor device. The basic device is an all-dielectric intensity modulator. The ability to operate the sensor without the use of any metal antenna permits its use in extremely high field conditions without any danger of damaging the sensor. The optical fiber connections provide optical isolation to the instrumentation to protect the instrumentation from possible overload conditions. The electrode-less sensor is designed specially for measuring high field strengths similar to the conditions in electromagnetic pulse, high power microwave and high voltage power lines. Sensitivity improvements are possible by using carrier suppression techniques.
机译：本文描述了在电光锂铌酸锂基板中制造的电极较少，全光，宽带电场传感器。传感器组件是一定的光学马赫 - Zehnder干涉仪。电场传感器使用铌酸锂的电光特性来调制在马赫Zehnder干涉仪的每个臂中传播的光的相位。然后将相位调制的光转换为在干涉仪的输出处的强度调制。传感器装置的独特特征是Mach-Zehnder干涉仪的一个臂中的晶体的方向被反转以提供用于施加的电场的推挽光学调制。光纤连接到传感器装置的输入和输出。基本装置是全介电强度调制器。在不使用任何金属天线的情况下操作传感器的能力允许其在极高的场地条件下使用而不会损坏传感器的任何危险。光纤连接为仪器提供光学隔离，以保护仪器免受可能的过载条件。较少的电极传感器专为测量与电磁脉冲，高功率微波和高压电力线中的条件类似的高场强度。使用载波抑制技术可以实现灵敏度改进。

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