Speckle noise reduction strategies in laser-based projection imaging, fluorescence microscopy, and digital holography with uniform illumination, improved image …
V Kumar, AK Dubey, M Gupta, V Singh, A Butola… - Optics & laser …, 2021 - Elsevier
There has been immense advancement in laser-based projection imaging, fluorescence
microscopy, single-molecule localization nanoscopy, and digital holography. These …
microscopy, single-molecule localization nanoscopy, and digital holography. These …
Optical fiber sensors for civil engineering applications
CKY Leung, KT Wan, D Inaudi, X Bao, W Habel… - Materials and …, 2015 - Springer
Optical fiber sensor (OFS) technologies have developed rapidly over the last few decades,
and various types of OFS have found practical applications in the field of civil engineering. In …
and various types of OFS have found practical applications in the field of civil engineering. In …
[PDF][PDF] 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 - researchgate.net
We report significant speckle reduction in a laser illumination system using a vibrating
multimode optical fiber bundle. The optical fiber bundle was illuminated by two independent …
multimode optical fiber bundle. The optical fiber bundle was illuminated by two independent …
Optical fiber specklegram chemical sensor based on a concatenated multimode fiber structure
E Fujiwara, LE da Silva, TD Cabral… - Journal of Lightwave …, 2019 - opg.optica.org
An optical fiber specklegram chemical sensor based on a concatenated multimode-no-core-
multimode structure is reported. The 30 mm-no-core section is immersed in the analyzed …
multimode structure is reported. The 30 mm-no-core section is immersed in the analyzed …
[HTML][HTML] Agar-based soft tactile transducer with embedded optical fiber specklegram sensor
E Fujiwara, L de Oliveira Rosa - Results in Optics, 2023 - Elsevier
Tactile transducers monitor physical variables like force and texture through direct contact,
featuring indispensable in human–computer interaction and biomedical applications. This …
featuring indispensable in human–computer interaction and biomedical applications. This …
Evaluation of image matching techniques for optical fiber specklegram sensor analysis
E Fujiwara, Y Ri, YT Wu, H Fujimoto, CK Suzuki - Applied optics, 2018 - opg.optica.org
A quantitative study of image matching techniques applied to fiber specklegram sensor
analysis is presented. The fiber status is modulated by a microbending transducer, so the …
analysis is presented. The fiber status is modulated by a microbending transducer, so the …
Polymer optical fiber specklegram strain sensor with extended dynamic range
E Fujiwara, L Evaristo da Silva… - Optical …, 2018 - spiedigitallibrary.org
A polymer optical fiber strain sensor with extended dynamic range is reported. The proposed
algorithm resets the reference fiber status depending on the magnitude of the specklegram …
algorithm resets the reference fiber status depending on the magnitude of the specklegram …
Magnetic field sensing based on multimode fiber specklegrams
R Zhu, S Wan, Y Xiong, H Feng… - Journal of Lightwave …, 2021 - ieeexplore.ieee.org
We demonstrate a fiber magnetic field sensor based on multimode fiber specklegrams. The
magnetic field is detected by measuring the change of speckle patterns with digital …
magnetic field is detected by measuring the change of speckle patterns with digital …
Displacement sensor based on a large-core hollow fiber and specklegram analysis
JH Osório, TD Cabral, E Fujiwara, MAR Franco… - Optical Fiber …, 2023 - Elsevier
The research enterprise towards achieving high-performance hollow-core photonic crystal
fibers has led to impressive advancements in the latest years. Indeed, using this family of …
fibers has led to impressive advancements in the latest years. Indeed, using this family of …
Optical fiber specklegram sensor for multi-point curvature measurements
E Fujiwara, TD Cabral - Applied Optics, 2022 - opg.optica.org
We present a multi-point curvature sensor based on optical fiber specklegram
measurements. Apart from the current approaches, the proposed system uses an ordinary …
measurements. Apart from the current approaches, the proposed system uses an ordinary …