Laser speckle reduction by multimode optical fiber bundle with combined temporal, spatial, and angular diversity

DS Mehta, DN Naik, RK Singh, M Takeda - Applied optics, 2012 - opg.optica.org
speckle reduction in a laser illumination system using a vibrating multimode optical fiber
We have used a multimode fiber optic bundle for speckle reduction in a laser illumination system…

Completely passive method of speckle reduction utilizing static multimode optical fibre and two-dimensional diffractive optical element

AV Prygun, YM Morozov, TY Kliuieva… - Journal of Modern …, 2019 - Taylor & Francis
… single-core optical fibre and multimode optical fibre bundle were used. The dependence of
the speckle reduction efficiency as a function of the optical fibre type and optical fibre length …

Investigation of speckle suppression beyond human eye sensitivity by using a passive multimode fiber and a multimode fiber bundle

A Lapchuk, Z Le, Y Guo, Y Dai, Z Liu, Q Xu, Z Lu… - Optics …, 2020 - opg.optica.org
… method of speckle reduction using a single multimode fiber and a multimode fiber bundle
was … The dependences of the speckle contrast and speckle suppression coefficient on the …

Experimental characterization of the speckle pattern at the output of a multimode optical fiber

D Halpaap, J Tiana-Alsina, M Vilaseca, C Masoller - Optics express, 2019 - opg.optica.org
… laser and a multimode optical fiber we study experimentally how the speckle pattern depends
on … Our work is motivated by the problem of speckle reduction in double pass (DP) ocular …

Multi-mode fiber-based speckle contrast optical spectroscopy: analysis of speckle statistics

CHP Lin, I Orukari, C Tracy, LK Frisk, M Verma… - Optics Letters, 2023 - opg.optica.org
multi-mode fiber (MMF) bundles for use in SCOS/T systems. One challenge with speckle
We downsampled pixels in a speckle image from the dynamic spatial data to reduce the …

Speckle reduction in near-field image of multimode fiber with a piezoelectric transducer

WS Ha, SJ Lee, KH Oh, YM Jung… - Journal of the Optical …, 2008 - opg.optica.org
… studied the effective speckle noise reducing method in 50 μm … Speckle noise has generally
been used in optical signal … However, in this paper, quantitative analysis of speckle reduction

Combination of micro-scanning mirrors and multi-mode fibers for speckle reduction in high lumen laser projector applications

Z Tong, W Shen, S Song, W Cheng, Z Cai, Y Ma… - Optics …, 2017 - opg.optica.org
… CRs are lower than 0.3 when the MSM is turned off; after the EM-MSM is driven, we can
achieve further speckle reduction; more efficient speckle reductions are obtained by the raster …

Optical coherence tomography speckle reduction by a partially spatially coherent source

J Kim, DT Miller, E Kim, S Oh, J Oh… - Journal of Biomedical …, 2005 - spiedigitallibrary.org
… Both single- and multi-mode optical fibers are placed in the source path of a Michelson … on
speckle reduction. First, we used a 100 - m -long, 0.48-NA multimode glass optical fiber with a …

Speckle reduction in OCT with multimode source fiber

J Kim, EK Kim, DT Miller… - Optical Fibers and …, 2004 - spiedigitallibrary.org
… a spatial speckle reduction method by using a 100m multimode fiber at the source … Speckle
noise in the interferogram recorded using the multimode source fiber is substantially reduced

Speckle reduction by optimized multimode fiber combined with dielectric elastomer actuator and lightpipe homogenizer

Q Ma, CQ Xu, A Kitai, D Stadler - Journal of Display Technology, 2016 - opg.optica.org
… In this paper, a de-speckle system consisting of a multimode fiber (MMF), a dielectric …
demonstrated, which can reduce speckle significantly. The speckle reduction components used in …