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A sketch diagram of the new optical-fiber frequency domain interferometer.
The spectral line shape of the OFDI light source (a) and the error library of the OFDI system (b).
Data processing procedures: typical output of the new OFDI system (a), the initial result of the delay time by Fourier transforming to the raw output data (b), and the ultimate delay time T by another Fourier transforming and subsequent Gaussian fitting to the extended output data (c). The peak value of the fitted curve shown in red circle is the measured delay time.
Measured single-step length of the translation stage.
A diagram of the OFDI system for online measurement of the thickness of gauge blocks.
The measurement result of the gauge blocks.
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