The R-OPO fibre sensor enables real-time strain and temperature monitoring over 25 km, enhancing infrastructure safety with high sensitivity and resolution.

Radio frequency (RF) refers to the part of the electromagnetic spectrum where electromagnetic waves can be generated by alternating current fed to an antenna. It spans from around 3 kHz to 300 GHz. RF ...

Silica optical fiber is well recognized as a decent nonlinear optical medium to carry out nonlinear optics due to the long-interaction length and high-power density in the fiber core. However, the ...

Current extrinsic fiber acoustic sensors face two primary challenges. The first lies in the time-varying initial phase of the interference signal, which arises from environmental vibrations, ...

Assessing pure resins or resin-fiberglass composites is straightforward and only requires the placement of the sample on the sensor. However, a conductive fiber contacting the sensor in carbon-fiber ...

The trick to creating a better quantum sensor? Just give it a little squeeze. For the first time ever, scientists have used a technique called “quantum squeezing” to improve the gas sensing ...

Frequency modulation spectroscopy is a nondestructive technology for determining the water activity of pharmaceutical samples. This article discusses the various pharmaceutical applications of ...

Scientists use devices known as frequency comb lasers to search for methane in the air above oil and gas operations and to screen for signs of infection in human breath. A new study could help make ...