Advertisement

Measurement of Thickness and Refractive Index of Optical Samples in FD-OCT with Two Orthogonal Polarized Lights

Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 345)

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.

Keywords

Optical coherence tomography (OCT) Optical imaging Orthogonal polarized lights 

Notes

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.

References

  1. 1.
    Haruna, M., Ohmi, M.: Simultaneous measurement of the phase and group indices and the thickness of transparent plates by low-coherence interferometry. Opt. Lett. 23(12), 966–968 (1998)CrossRefGoogle Scholar
  2. 2.
    Huang, D., Swanson, E.A., Lin, C.P., Schuman, J.S., Stinson, W.G., Chang, W., Hee, M.R., Flotte, T., Gregory, K., Puliafito, C.A., Fujimoto, J.G.: Optical coherence tomography. Science 254, 1178–1181 (1991)CrossRefGoogle Scholar
  3. 3.
    Vabre, L., Dubois, A., Boccara, A.C.: Thermal-light full-field optical coherence tomography. Opt. Lett. 27, 530–532 (2002)CrossRefGoogle Scholar
  4. 4.
    Wojtkowski, M., Leitgeb, R., Kowalczyk, A., Bajraszewski, T., Fercher, A.F.: In vivo human retinal imaging by Fourier domain optical coherence tomography. J. Biomed. Opt. 7(3), 457–463 (2002)CrossRefGoogle Scholar
  5. 5.
    Wojtkowski, M., Kowalczyk, A., Leitgeb, R., Fercher, A.F.: Full range complex spectral optical coherence tomography technique in eye imaging. Opt. Lett. 27, 1415–1417 (2002)CrossRefGoogle Scholar
  6. 6.
    Leitgeb, R.A., Hitzenberger, C.K., Fercher, A.F., Bajraszewski, T.: Phase-shifting algorithm to achieve highspeed long-depth-range probing by frequency-domain optical coherence tomography. Opt. Lett. 28, 2201–2203 (2003)CrossRefGoogle Scholar
  7. 7.
    Cheng, H.C., Shiu, M.S.: Experimental demonstration of high-speed full-range Fourier domain optical coherence tomography imaging using orthogonally polarized light and a phase-shifting algorithm. Appl. Opt. 51(36), 8762–8768 (2012)CrossRefGoogle Scholar

Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  1. 1.Department of Electro-Optical EngineeringNational Formosa UniversityYunlinTaiwan

Personalised recommendations