Mode excitations in D-shaped multimode fiber are analyzed in detail in terms of the effect of
launch offset, polishing depth, and length of the D-shaped section. Based on the analysis …

Different low-cost approaches based on fiber specklegram sensors are employed to
measure the physiological activity of patients lying in bed. This study is conducted over 20 …

The low-biased, fast, airborne, short-range, and range-resolved determination of
atmospheric wind speeds plays a key role in wake vortex and turbulence mitigation …

In this work, a novel method for cost-effective remote sensing of microvibrations is
presented. The proposed technique detects periodical changes in the spatial distribution of …

Light propagation in optical fibers is accompanied by random omnidirectional scattering.
The small fraction of coherent guided light that escapes outside the cladding of the fiber …

An optical fiber chemical sensor based on the analysis of the projected specklegram
characteristics is presented. The multimode no-core fiber is surrounded by the assessed …

An image compression-encryption scheme utilizing the combination of fiber specklegram-
based compressive sensing (CS) and double random phase encoding (DRPE) was …

The ballistocardiogram (BCG) is a graphic representation of the movements of the body
associated with cardiac activity. In this article, a 10-min BCG has been captured for ten …

A novel speckle-based method for sensing frequency vibration is demonstrated in a
reflective configuration. By employing a visible dual-wavelength approach it is also possible …

Compressive sensing (CS) is a recently developed theory which allows reconstruction of
sparse signals with the number of measurements much lower than that required by the …