An optical fiber has been used in a wide area such as in communication system, a view
guide for diagnosis, applied optical sensor, etc. In such applications of the optical fiber …

When coherent light beams, ie, laser beams, are incident on one end of an optical fiber and
transmitted to another end to exit from there so as to form an output light spot on a screen …

Laser is a usual light source in many measurement applications, because it has good
coherence. To measure the light transmission of a large-core fiber, we designed and setup a …

To investigate the possibilities of employing speckle patterns alterations, to be noticed in an
emerging light spot from step index multimode optical fiber, due to outer perturbation for …

We present a detailed theoretical and experimental study on the sensitivity enhancement for
multimode fiber (MMF) speckle sensor. Using mode coupling theory, we derive an …

A vibration sensing technique using the speckle contrast ratio from a multimode fiber is
introduced. This sensing technique is based on time integration by a CCD camera, from …

In this paper, we report some results about the effects of varying the wavelength in a
structure of a non-holographic fiber specklegram sensor. In these arrangements, the speckle …

Instead of exploiting the temporal content, the spatial content from a multimode fiber is
exploited for sensing. The analyses and experimentation have shown that the fiber …

In this work, a low-cost WDM interrogation system has been proposed and experimentally
tested to obtain two independent channels of a fiber specklegram sensor. Two lasers of …

In this study, a low-cost and compact refractive index (RI) sensor based on speckle pattern
imaging has been proposed and demonstrated numerically and experimentally. We have …