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Multimode fiber transmission matrix obtained with internal references
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Paper Abstract

Multimode fiber imaging using transmission matrix (TM) is a promising way of deep inspection of living objects. These techniques, however, face a problem of obtaining the transmission matrix using phase-shifting interferometry with external reference beam, which requires additional instrumentation and increases space requirements of the experiment. We suggest a method employing input mode represented by a focal spot at the proximal end of the fiber as an internal reference wave. Due to speckle nature of the output, it is necessary to cover blind spots in the transmission matrix arising from the lack of interference signal by several measurements with different input modes used as a reference. The effect of optimized selection of internal references will be analyzed and compared with the external reference approach.

Paper Details

Date Published: 20 February 2019
PDF: 6 pages
Proc. SPIE 10886, Adaptive Optics and Wavefront Control for Biological Systems V, 1088610 (20 February 2019); doi: 10.1117/12.2510668
Show Author Affiliations
Petr Jákl, Institute of Scientific Instruments of the CAS, v.v.i. (Czech Republic)
Martin Šiler, Institute of Scientific Instruments of the CAS, v.v.i. (Czech Republic)
Jan Ježek, Institute of Scientific Instruments of the CAS, v.v.i. (Czech Republic)
Johanna Trägårdh, Institute of Scientific Instruments of the CAS, v.v.i. (Czech Republic)
Pavel Zemánek, Institute of Scientific Instruments of the CAS, v.v.i. (Czech Republic)
Tomáš Čižmár, Institute of Scientific Instruments of the CAS, v.v.i. (Czech Republic)
Leibniz-Institut für Photonische Technologien e.V. (Germany)


Published in SPIE Proceedings Vol. 10886:
Adaptive Optics and Wavefront Control for Biological Systems V
Thomas G. Bifano; Sylvain Gigan; Na Ji, Editor(s)

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