Measuring device for interferential sensor arm length difference
A measuring device and sensor technology, applied in the direction of instruments, etc., can solve the problems of high time cost and labor cost, and achieve the effect of low cost, large measuring range and fast speed
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 In order to describe the present invention more specifically, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
 Such as image 3 As shown, an interferometric sensor arm length difference measurement device includes a wide-spectrum light source 1, a Mach-Zehnder intensity modulator 2, a microwave frequency sweep source 3, a power divider 4, a DC stabilized power supply 5, and a high-speed photodetector 7 , radio frequency amplifier 8, phase shifter 9, mixer 10, low-pass filter 11, AD sampler 12 and measurement processor (MCU) 13; Wherein:
 The output end of the broadband light source 1 is connected to the optical input end of the Mach-Zehnder intensity modulator 2, and the radio frequency signal generated by the microwave sweeping source 3 is divided into two paths through the power divider 4, one of which is connected to the radio frequency input of ...
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