Bias-free optical current sensors based on quadrature interferometric integrated optics
Bias-free optical current sensors based on quadrature interferometric integrated optics
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DOI：
10.1364/oe.26.031599
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发表时间：
2018-11-26
期刊：
影响因子：
3.8
通讯作者：
Oh, Min-Cheol
中科院分区：
文献类型：
--
作者：
Kim, Sung-Moon;Park, Tae-Hyun;Oh, Min-Cheol
通过集成聚合物光波导元件，构建了反射式正交干涉仪，验证了一种无偏置反馈控制的光电流传感器。为了获得两个相位差为90度的干涉信号，在聚合物光波导芯片中插入半波和四分之一波片，并使用偏振相关双折射调制器对光传感器进行初始化，包括调整探测器增益。在传感器无偏工作期间，测量误差小于+/- 0.2%，确认即使不维持工作点，传感器输出也能稳定15 h。(C) 2018年美国光学学会根据OSA开放获取出版协议的条款
A reflective quadrature interferometer was constructed by integrating polymeric optical waveguide components, to demonstrate an optical current sensor that could operate without bias feedback control. In order to obtain two interference signals with a phase difference of 90 degrees, half-wave and quarter-wave plates were inserted in the polymeric optical waveguide chip, and a polarization-dependent birefringence modulator was used for the initialization of the optical sensor, including detector gain adjustment. During the bias-free operation of the sensor, the measurement error was less than +/- 0.2%, and it was confirmed that the sensor output was stable for 15 h even if the operating point was not maintained. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement