OSA's Digital Library

Optics Letters

Optics Letters


  • Vol. 28, Iss. 24 — Dec. 15, 2003
  • pp: 2476–2478

Self-referenced method for optical path difference calibration in low-coherence interferometry

M. Laubscher, L. Froehly, B. Karamata, R. P. Salathé, and T. Lasser  »View Author Affiliations

Optics Letters, Vol. 28, Issue 24, pp. 2476-2478 (2003)

View Full Text Article

Acrobat PDF (803 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



A simple method for the calibration of optical path difference modulation in low-coherence interferometry is presented. Spectrally filtering a part of the detected interference signal results in a high-coherence signal that encodes the scan imperfections and permits their correction. The method is self-referenced in the sense that no secondary high-coherence light source is necessary. Using a spectrometer setup for spectral filtering allows for flexibility in both the choice of calibration wavelength and the maximum scan range. To demonstrate the method’s usefulness, it is combined with a recently published digital spectral shaping technique to measure the thickness of a pellicle beam splitter with a white-light source.

© 2003 Optical Society of America

OCIS Codes
(110.1650) Imaging systems : Coherence imaging
(110.4500) Imaging systems : Optical coherence tomography
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(120.5800) Instrumentation, measurement, and metrology : Scanners
(170.4500) Medical optics and biotechnology : Optical coherence tomography

M. Laubscher, L. Froehly, B. Karamata, R. P. Salathé, and T. Lasser, "Self-referenced method for optical path difference calibration in low-coherence interferometry," Opt. Lett. 28, 2476-2478 (2003)

Sort:  Author  |  Year  |  Journal  |  Reset


  1. M. Kobayashi, H. F. Taylor, K. Takada, and J. Noda, IEEE Photon. Technol. Lett. 3, 564 (1991).
  2. G. F. Lindgren, R. P. Salathe, and R. Waelti, “Method and device for measuring the optical properties of transparent and/or diffusive objects,” German patent WO9922198-A1 (May 6, 1999).
  3. J. Schmit and A. Olszak, Appl. Opt. 41, 5943 (2002).
  4. R. Tripathi, N. Nassif, J. S. Nelson, B. H. Park, and J. F. de Boer, Opt. Lett. 27, 406 (2002).
  5. L. Mandel and E. Wolf, Optical Coherence and Quantum Optics (Cambridge U. Press, Cambridge, England, 1995).

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