OSA's Digital Library

Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 22 — Aug. 1, 2012
  • pp: 5512–5516

Wavenumber scanning-based Fourier transform white-light interferometry

Zhen Wang and Yi Jiang  »View Author Affiliations

Applied Optics, Vol. 51, Issue 22, pp. 5512-5516 (2012)

View Full Text Article

Enhanced HTML    Acrobat PDF (655 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



Fourier transform white-light interferometry recovers the optical path difference of an interferometer by measuring the phase change caused by scanning wavelength. However, the optical spectrum, obtained by wavelength scanning method (λ-method), contains a chirp in period. The chirp would induce deviation and decrease the measurement accuracy. An improved method, the wavenumber scanning method (k-method), is proposed and experimentally demonstrated, in which there is no chirp in the optical spectrum. The measurement results using the k-method and the λ-method are compared experimentally. The experimental results show that the standard deviation of the measurement results decreases from 0.015 to 0.004 μm, when an extrinsic Fabry–Perot interferometer with a cavity length of 387 μm is interrogated.

© 2012 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.2230) Instrumentation, measurement, and metrology : Fabry-Perot
(120.3180) Instrumentation, measurement, and metrology : Interferometry

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: May 29, 2012
Manuscript Accepted: July 2, 2012
Published: July 30, 2012

Zhen Wang and Yi Jiang, "Wavenumber scanning-based Fourier transform white-light interferometry," Appl. Opt. 51, 5512-5516 (2012)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. V. Bhatia, K. A. Murphy, R. O. Claus, M. E. Jones, J. L. Grace, T. A. Tran, and J. A. Greene, “Optical fibre based absolute extrinsic Fabry–Perot interferometric sensing system,” Meas. Sci. Technol. 7, 58–61 (1996). [CrossRef]
  2. C. Belleville and G. Duplain, “White-light interferometric multimode fiberoptic strain sensor,” Opt. Lett. 18, 78–80 (1993). [CrossRef]
  3. A. C. Wong, P. A. Childs, and G. D. Peng, “Simultaneous demodulation technique for a multiplexed fiber Fizeau interferometer and fiber Bragg grating sensor system,” Opt. Lett. 31, 23–25 (2006). [CrossRef]
  4. Y. J. Rao, X. J. Wang, T. Zhu, and C. X. Zhou, “Demodulation algorithm for spatial-frequency-division-multiplexed fiber-optic Fizeau strain sensor networks,” Opt. Lett. 31, 700–702(2006). [CrossRef]
  5. M. Han and A. B. Wang, “Exact analysis of low-finesse multimode fiber extrinsic Fabry–Perot interferometers,” Appl. Opt. 43, 4659–4666 (2004). [CrossRef]
  6. M. Han, Y. Zhang, F. Shen, G. R. Pickrell, and A. Wang, “Signal-processing algorithm for white-light optical fiber extrinsic Fabry–Perot interferometric sensors,” Opt. Lett. 29, 1736–1738 (2004). [CrossRef]
  7. F. Xu, D. X. Ren, X. L. Shi, C. Li, W. W. Lu, L. Lu, and B. L. Yu, “High-sensitivity Fabry–Perot interferometric pressure sensor based on a nanothick silver diaphragm,” Opt. Lett. 37, 133–135 (2012). [CrossRef]
  8. C. Ma, E. M. Lally, and A. B. Wang, “Toward eliminating signal demodulation jumps in optical fiber intrinsic Fabry–Perot interferometric sensors,” J. Lightwave Technol. 29, 1913–1919 (2011). [CrossRef]
  9. B. Yu, A. Wang, G. Pickrell, and J. Xu, “Tunable-optical-filter-based white-light interferometry for sensing,” Opt. Lett. 30, 1452–1454 (2005). [CrossRef]
  10. C. Boulet, M. Hathaway, and D. A. Jackson, “Fiber-optic-based absolute displacement sensors at 1500 nm by means of a variant of channeled spectrum signal recovery,” Opt. Lett. 29, 1602–1604 (2004). [CrossRef]
  11. V. Bhatia, M. Sen, K. Murphy, and R. Claus, “Wavelength-tracked white light interferometry for highly sensitive strain and temperature measurements,” Electron. Lett. 32, 247–249 (1996). [CrossRef]
  12. Y. J. Rao, M. Deng, D. W. Duan, X. C. Yang, T. Zhu, and G. H. Cheng, “Micro Fabry–Perot interferometers in silica fibers machined by femtosecond laser,” Opt. Express 15, 14123–14128 (2007). [CrossRef]
  13. Y. Jiang and C. Tang, “High-finesse micro-lens fiber-optic extrinsic Fabry–Perot interferometric sensors,” Smart Mater. Struc. 17, 055013 (2008). [CrossRef]
  14. T. Liu and G. F. Fernando, “A frequency division multiplexed low-finesse fiber optic Fabry–Perot sensor system for strain and displacement measurements,” Rev. Sci. Instrum. 71, 1275–1278 (2000). [CrossRef]
  15. Y. Jiang, “Fourier transform white-light interferometry for the measurement of fiber-optic extrinsic Fabry–Perot interferometric sensors,” IEEE Photon. Technol. Lett. 20, 75–77 (2008). [CrossRef]
  16. Y. Jiang, “High-resolution interrogation technique for fiber optic extrinsic Fabry–Perot interferometric sensors by the peak-to-peak method,” Appl. Opt. 47, 925–932 (2008). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited