Evaluation of a multimode fiber optic low coherence interferometer for path length resolved Doppler measurements of diffuse light

Varghese, Babu and Rajan, Vinayakrishnan and Leeuwen van, Ton G. and Steenbergen, Wiendelt (2007) Evaluation of a multimode fiber optic low coherence interferometer for path length resolved Doppler measurements of diffuse light. Review of Scientific Instruments, 78 (12). p. 126103. ISSN 0034-6748

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Abstract:	The performance of a graded index multimode fiber optic low coherence Mach-Zehnder interferometer with phase modulation is analyzed. Investigated aspects were its ability to measure path length distributions and to perform path length resolved Doppler measurements of multiple scattered photons in a turbid suspension of particles undergoing Brownian and translational motion. The path length resolution of this instrument is compared with a system using single mode fibers for illumination and detection. The optical path lengths are determined from the zero order moment of the phase modulation peak in the power spectrum. The weighted first moment, which is equal to the average Doppler shift, shows a linear response for different mean flow velocities within the physiological range
Item Type:	Article
Copyright:	© 2007 American Institute of Physics
Faculty:	Science and Technology (TNW)
Research Group:	Biomedical Photonic Imaging (BMPI)
Link to this item:	http://purl.utwente.nl/publications/76433
Official URL:	http://dx.doi.org/10.1063/1.2823558
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