There has been immense advancement in laser-based projection imaging, fluorescence
microscopy, single-molecule localization nanoscopy, and digital holography. These …

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 …

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 …

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 …

Tactile transducers monitor physical variables like force and texture through direct contact,
featuring indispensable in human–computer interaction and biomedical applications. This …

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 …

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 …

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 …

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 …

We present a multi-point curvature sensor based on optical fiber specklegram
measurements. Apart from the current approaches, the proposed system uses an ordinary …