Speckle patterns are a powerful tool for high-precision metrology because they enable
remarkable performance in relatively simple setups. Nonetheless, researchers in this field …

Optical fiber sensors have been studied, developed, and already used in the industry for
more than 50 years due to their multiplexing capabilities, lightweight design, compact form …

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 …

Wavemeters are very important for precise and accurate measurements of both pulses and
continuous-wave optical sources. Conventional wavemeters employ gratings, prisms, and …

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

In recent years, the development of highly sensitive and cost-effective sensing technologies
has gained significant attention in the field of optical sensors. This article introduces a novel …

The inception of photonic crystal fibers (PCFs) allowed for unprecedented tailoring of
waveguide properties for specialty sensing probes. Exposed core microstructured fibers …

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 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 …

A fiber speckle sensor (FSS) based on a tapered multimode fiber (TMMF) has been
developed to measure liquid analyte refractive index (RI) in this work. By the lateral and …