Dual-band wavelength-comb-swept laser to extend displacement measurement range

Seongjin Bak; Gyeong Hun Kim; Chang-Seok Kim

doi:10.1117/12.2526914

19 July 2019 Dual-band wavelength-comb-swept laser to extend displacement measurement range

Seongjin Bak, Gyeong Hun Kim, Chang-Seok Kim

Proceedings Volume 11078, Optical Coherence Imaging Techniques and Imaging in Scattering Media III; 110781W (2019) https://doi.org/10.1117/12.2526914
Event: European Conferences on Biomedical Optics, 2019, Munich, Germany

Abstract

We demonstrate dual-band wavelength-comb-swept laser for solving the aliasing interferometer signal in displacement measurement. Wavelength-comb-swept laser with etalon filter has longer coherence length and narrower linewidth than conventional wavelength-swept laser. On the other hand, aliasing of interferometer signal in displacement measurement is induced because of discrete distribution of comb spectra in wavelength domain. By using the dual-band wavelength-comb-swept-laser which has two different free spectral range (FSR) comb in each band, aliasing interferometer signal can be solved.

Citation Download Citation

Seongjin Bak, Gyeong Hun Kim, and Chang-Seok Kim "Dual-band wavelength-comb-swept laser to extend displacement measurement range", Proc. SPIE 11078, Optical Coherence Imaging Techniques and Imaging in Scattering Media III, 110781W (19 July 2019); https://doi.org/10.1117/12.2526914

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