Range selectable frequency-space low-coherence Interferometer: comparison of the theory and measured performance

Wojtek J. Walecki

doi:10.1117/12.2593999

1 August 2021 Range selectable frequency-space low-coherence Interferometer: comparison of the theory and measured performance

Wojtek J. Walecki

Author Affiliations +

Proceedings Volume 11817, Applied Optical Metrology IV; 118170C (2021) https://doi.org/10.1117/12.2593999
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

We present analysis and experimental evaluation of a novel system based on fiber optic frequency space low coherence interferometer (FSLCI), employing selectable filter frequency space Moire technology d in [1]. Our system is using novel polarization-maintaining-fiber-based filters allowing user to select the working range from 0 cm. We discuss in detail tradeoffs of this technology due to losses on optical switches. The system is more robust than the earlier disclosed design based on free space Fabry Perot filter [1] . The use of the new design eliminated etalon described in Ref 1 and eliminated artifacts resulted from non-sinusoidal transmission dependence on light frequency of the etalon. Reference: 1. Walecki, Wojtek J., et al. In Applied Optical Metrology II, vol. 10373, p. 103730N. International Society for Optics and Photonics, 2017.

Conference Presentation

Citation Download Citation

Wojtek J. Walecki "Range selectable frequency-space low-coherence Interferometer: comparison of the theory and measured performance", Proc. SPIE 11817, Applied Optical Metrology IV, 118170C (1 August 2021); https://doi.org/10.1117/12.2593999

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