发明授权
US4867565A Opto-electronic detection device for remotely detecting a physical magnitude 失效
用于远程检测物理量值的光电检测装置

Opto-electronic detection device for remotely detecting a physical
magnitude
摘要:
A spectrum modulation encoding sensor subjected to the physical magnitude to be measured is connected by an optical fiber to a source of incoherent light, and by an optical fiber to a static demodulation system comprising a set of birefringent elements producing a birefringence gradient along a privileged optical direction x; the system demodulates the signal provided by the sensor optically by means of a Fourier transform.
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