Non-contacting displacement sensor using bi-directional modulation of mach-zehnder electro-optical modulator

The invention Mach-Zehnder bidirectional modulation of the light modulator to be on the non-contact displacement sensor using the same, the present invention is a light source, sseokyul for outputting light to be input is connected to the light source to a different path radar, the input light and outputting the laser light collimator provided to the optical modulator for outputting the RF modulation, converts the modulated light received from the sub-optical modulator with a large area and outputting the measured object, and receives the light reflected from the measured object light modulator, the light receives the modulated light received from the light modulator switching / jeonbyeon for converting an optical signal into an electrical signal; And applying an RF signal to an optical modulator, and comprising parts of analysis of analyzing the spectrum of the electrical signal input from the switching optical / jeonbyeon, the optical modulation unit to forward the light inputted from the circulator RF modulated and output to the collimator, the collimator non-contact displacement using a bidirectional modulation of Zehnder light modulator Mach, characterized in that for measuring the displacement of the to-be-measured object by the reverse RF modulating light that is input using the downlink RF-modulated light and the uplink RF-modulated light time difference from It relates to a sensor.