The study of transfer function characteristic of long-base laser strainmeters

Jianguo You

doi:10.1117/12.904897

5 December 2011 The study of transfer function characteristic of long-base laser strainmeters

Jianguo You

Proceedings Volume 8197, 2011 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments; 819710 (2011) https://doi.org/10.1117/12.904897
Event: International Conference on Optical Instruments and Technology (OIT2011), 2011, Beijing, Beijing, China

Abstract

The study of the transfer function characteristic of long-base laser strainmeters is the base to explain the interferometer output data. The long-base laser strainmeter comprises the long-base optical interferometer and signal demodulation system, by measuring the change in displacement between the fixed points to determine the actual strain. According to the principle of the strainmeter and the working process of the signal demodulation system, we completed the theoretical modeling of the optical interferometer and the demodulation system, and determined its amplitude-frequency and phase-frequency characteristic. And we obtained the transfer function characteristic curve, providing a basis for the analysis of system output data and the optimization of the laser strainmeter design.

Citation Download Citation

Jianguo You "The study of transfer function characteristic of long-base laser strainmeters", Proc. SPIE 8197, 2011 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 819710 (5 December 2011); https://doi.org/10.1117/12.904897

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