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日本Hitachi光缆有限公司发明一种光纤传感器,传感器回路可把入射光分成垂直偏振光,入射到环形干涉仪,如下图所示。
Hitachi Cable Co., Ltd. of Japan invented a fiber optic sensor, the sensor circuit can be split into incident light perpendicularly polarized light, incident on the ring interferometer, as shown below.