Abstract
This chapter proposed an improved structure of frequency-domain optical coherence tomography (FD-OCT) which can measure the thickness and the refractive index of unknown sample simultaneously. In the conventional FD-OCT system, the mirror signal and autocorrelation terms will be generated after the inverse Fourier Transform and result in measurement range is restricted. Therefore, this study presents an improved method using the theory of phase-shifting algorithm with two orthogonal polarized lights to increase measurement range and eliminate unnecessary noise. By phase-shifting algorithms, eliminating unnecessary noise becomes possible and the measurement range is doubled. In other words, the structure of FD-OCT achieves simultaneous measurement of thickness and refractive index of optical samples based on full-range measurement.
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Acknowledgments
The current authors gratefully acknowledge the financial support provided to this study by the Ministry of Science and Technology, Taiwan under the grant MOST 103-2622-E-150-013-CC3.
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Chang, YF., Chen, YA., Cheng, HC. (2016). Measurement of Thickness and Refractive Index of Optical Samples in FD-OCT with Two Orthogonal Polarized Lights. In: Juang, J. (eds) Proceedings of the 3rd International Conference on Intelligent Technologies and Engineering Systems (ICITES2014). Lecture Notes in Electrical Engineering, vol 345. Springer, Cham. https://doi.org/10.1007/978-3-319-17314-6_15
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DOI: https://doi.org/10.1007/978-3-319-17314-6_15
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-17313-9
Online ISBN: 978-3-319-17314-6
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