Multiple-depth probing by wavelength-multiplexed low-coherence interferometry

Daniel Oestling; Trude Storen; Arne Royset; Ole Johan Lokberg; Lars Othar Svaasand; Tore Lindmo

doi:10.1117/12.427873

23 May 2001 Multiple-depth probing by wavelength-multiplexed low-coherence interferometry

Daniel Oestling, Trude Storen, Arne Royset, Ole Johan Lokberg, Lars Othar Svaasand, Tore Lindmo

Proceedings Volume 4251, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications V; (2001) https://doi.org/10.1117/12.427873
Event: BiOS 2001 The International Symposium on Biomedical Optics, 2001, San Jose, CA, United States

Abstract

We demonstrate a wavelength multiplexed low coherence interferometer that detects and demodulates four subbands of the source spectrum in parallel. By introducing dispersion into one of the interferometer arms we obtain a wavelength dependent measurement depth in the object. We analyze the influence of the dispersion on the signals and demonstrate simultaneous Doppler measurements of dynamic flow at three different positions within a tube. The method can be used to remove false Doppler signals caused by an unsteady object and therefore has potential in blood flow monitoring.

Citation Download Citation

Daniel Oestling, Trude Storen, Arne Royset, Ole Johan Lokberg, Lars Othar Svaasand, and Tore Lindmo "Multiple-depth probing by wavelength-multiplexed low-coherence interferometry", Proc. SPIE 4251, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications V, (23 May 2001); https://doi.org/10.1117/12.427873

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