Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
권호 표지
DOI QR코드

DOI QR Code

Sweeping Automatic Linearization for Wavelength Swept Laser Used in Structure Safety Monitoring

구조물 안전 모니터링용 파장 스위핑 레이저를 위한 스위핑 자동 선형화

  • Lee, Duk-Kyu (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)
  • 이덕규 (강원대학교 IT대학 전자공학과) ;
  • 엄진섭 (강원대학교 IT대학 전자공학과)
  • Received : 2020.01.13
  • Accepted : 2020.01.16
  • Published : 2020.01.31
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, a novel method for sweeping automatic linearization of wavelength swept laser is proposed. Through the test performed on the implemented laser, the linear sweeping is held up well with a 97% decrease in nonlinearity, and 60 nm sweeping range, 1 kHz sweeping frequency, and 8.8 mW average optical power were obtained. The proposed method uses fiber Bragg grating array, optical-electronic conversion circuit, FPGA embedded module, and a LabVIEW program to generate new compensated wave patterns which were applied to the fiber Fabry-Perot tunable filter. Linear sweeping can reduce the cumbersome and time-consuming recalibration process required for nonlinear sweeping. Additionally, the proposed method provides more accurate measurement results for the structure safety monitoring system.

Keywords

References

  1. K. O. Hill, and G. Meltz, "Fiber bragg grating fundamentals and overview", J. Lightwave Technol., Vol. 15, No. 8, pp. 1263-1276, 1997. https://doi.org/10.1109/50.618320
  2. A. D. Kersey, M. A. Davis, H. J. Patrick, M. LeBlanc, K. P. Koo, C. G. Askins, M. A. Putnam, and E. J. Friebele, "Fiber grating sensors", J. Lightwave Technol., Vol. 15, No. 8, pp. 1442-1463, 1997. https://doi.org/10.1109/50.618377
  3. J. C. Suarez, B. Remartinez, J. M. Menendez, A. Guemes, and F. Molleda, "Optical fibre sensors for monitoring of welding residual stresses", J. Mater. Process. Technol., Vol. 143, pp. 316-320, 2003.
  4. R. Huber, M. Wojtkowski, and J. G. Fujimoto, "Fourier domain mode locking (FDML): A new laser operating regime and applications for optical coherence tomography", Opt. Express, Vol. 14, pp. 3225-3237, 2006. https://doi.org/10.1364/OE.14.003225
  5. J. S. Eom, "Realization of swept source-optical coherence tomography system using wavelength swept source based on FDML method", J. Sens. Sci. Technol., Vol. 20, No. 1, pp.46-52, 2011. https://doi.org/10.5369/JSST.2011.20.1.46
  6. 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
  7. E. Hecht, Optics, Addison-Wesley, NY, 1987.
  8. Y. Lig, Y. Wang, and C. Wen, "Temperature and strain sensing properties of the zinc coated", OPTIK , Vol. 127, No. 16, pp. 6463-6469, 2016. https://doi.org/10.1016/j.ijleo.2016.04.054
  9. J. C. Palais, Fiber Optic Communications, Prentice Hall, Upper Saddle River, NJ, 2005.
  10. U. J. You, J. Y. Heo, D. H. Cho, K. W. Chang, J. G. Seo, B. S. Lee, Y. H. Cho, J. H. Moon, and B. K. Park, "A Spectroscopic research for development of optical fiber pH sensor", J. Sens. Sci. Technol., Vol. 18, No. 5, pp.365-371, 2009. https://doi.org/10.5369/JSST.2009.18.5.365