Velocity measurements with structured light transmitted through a multimode optical fiber using digital optical phase conjugation

被引：21

作者：

Buettner, Lars ^{[1
]}

Thuemmler, Martin ^{[1
]}

Czarske, Juergen ^{[1
]}

机构：

[1] Tech Univ Dresden, Fac Elect & Comp Engn, Lab Measurement & Sensor Syst Tech MST, D-01062 Dresden, Germany

来源：

OPTICS EXPRESS | 2020年 / 28卷 / 06期

关键词：

MICROSCOPY; TRANSMISSION; RESOLUTION; SENSOR;

D O I：

10.1364/OE.386047

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Lensless fiber microendoscopes enable optical diagnostics and therapy with minimal invasiveness. Because of their small diameters, multimode fibers are ideal candidates, but mode scrambling hinders the transmission of structured light fields. We present the generation of a localized fringe system at variable distances from the distal fiber end by exploiting digital optical phase conjugation. The replayed fringe system was used for quantitative metrology. Velocity measurements of a microchannel flow in the immediate proximity of the fiber end without the use of any imaging lenses are shown. Lensless multimode fiber systems are of interest especially for biomedical imaging and stimulation as well as technical inspection and flow measurements. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：8064 / 8075

页数：12

共 35 条

[1]

Albrecht H.E., 2002, Laser Doppler and phase Doppler measurement techniques

[2] Impulsive Brillouin microscopy [J].