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SS-OCT용 고 주파수분해능 저비용 정현파 발생기

Low Cost Signal Generator with Frequency High-Resolution for SS-OCT

  • 이주찬 (강원대학교 IT대학 전자공학과) ;
  • 엄진섭 (강원대학교 IT대학 전자공학과)
  • Lee, Juchan (Department of Electronics Engineering, The School of Information Technology, Kangwon National University) ;
  • Eom, Jinseob (Department of Electronics Engineering, The School of Information Technology, Kangwon National University)
  • 투고 : 2012.12.03
  • 심사 : 2013.01.21
  • 발행 : 2013.01.31

초록

In this paper, the low price signal generator with capability of frequency high-resolution and variable sync pulse has implemented. It fulfils well the requirements for SS-OCT of the frequency resolution less than 1Hz, frequency stability of ${\leq}{\pm}0.5Hz$/10 min and variable sync pulse output timing. Through its performance test applied to wavelength swept laser, 120 nm sweeping range and 10 mW average optical power were obtained. This shows that the realized sine-wave generator can replace the commercial high cost and high performance signal generators employed by current SS-OCT systems.

키워드

참고문헌

  1. M. Brezinski, MD, PhD, "Optical coherence tomography, principles and applications". OP Institute of Physics, 2003.
  2. D. Huang and J. G. Fujimoto, "Optical coherence tomography", Science, Vol. 254, pp. 1178-1181, 1991. https://doi.org/10.1126/science.1957169
  3. Y. K. Kim, "A study on time-domain optical coherence tomography(OCT) based on piezoelectric transducer optical delay line", PhD dissertation, Kyung Hee University, 2011.
  4. Y. Yasuno, V. D. Madjarova, and S. Makita, "Threedimensional and high-speed swept-source optical coherence tomography for in vivo investigation of human anterior eye segments", Opt. Express, Vol. 13, pp. 10652-10664, 2005 . https://doi.org/10.1364/OPEX.13.010652
  5. R. Leitgeb, C. K. Hitzenberger, and A. F. Fercher, "Performance of Fourier domain vs. time domain optical coherence tomography", Opt. Express, Vol. 11, pp. 889-894, 2003. https://doi.org/10.1364/OE.11.000889
  6. M. A. Choma, M. V. Sarunic, C. Yang, and J. Izatt, "Sensitivity advantage of swept source and Fourier domain optical coherence tomography", Opt. Express, Vol. 11, pp. 2183-2189, 2003. https://doi.org/10.1364/OE.11.002183
  7. H. S. Kim, M. Y. Namgoong, J. R. Lee, and J. S. Eom, "Realization of swept source-optical coherence tomography system using loop mirror within reference arm", Conference on Optoelectronics & Optical Communications(COOC) 2007, Vol. 14, pp. 402-403, 2007.
  8. R. Huber, M. Wojtkowski, K. Taira, J. G. Fujimoto, and K. Hsu, "Amplified, frequency swept lasers for frequency domain reflectometry and OCT imaging : design and scaling principles," Opt. Express, Vol. 13, pp. 3513-3528, 2005. https://doi.org/10.1364/OPEX.13.003513
  9. Eugene Hecht, Optics, Addison-Wesley, 1987.
  10. A. G. Podoleanu, "Unbalanced versus balanced operation in an optical coherence tomography system", Appl. Opt., Vol. 39, pp. 173-182, 2000. https://doi.org/10.1364/AO.39.000173
  11. J. S. Eom, "Realization of swept source-optical coherence tomography using FDML laser", J. Sensor Sci. & Tech., Vol. 20, No. 1, pp. 46-52, 2011. https://doi.org/10.5369/JSST.2011.20.1.46
  12. W. J. Yoo, I. Y. Heo, D. h. Cho, K. W. Jang, J. K. Seo, B. S. Lee, Y. H. Cho, J. H. Moon, and B. G. Park, "Fiber-optic sensor, optical fiber, optical sensor, pH sensor, phenol red", J. Sensor Sci. & Tech., Vol. 18, No. 5, pp. 365-371, 2009. https://doi.org/10.5369/JSST.2009.18.5.365