This image summarizes the newly demonstrated sensing principle. Light transmitted through a single-mode fiber (SMF)–polymer optical fiber (POF)–SMF structure is photodetected, and interference dips ...

Scientists have demonstrated a new fiber-optic sensing method that detects strain and displacement by reading interference patterns directly in the electrical spectrum of a photodetected signal. The ...

Fiber optic sensors - used in critical applications like detecting fires in tunnels, pinpointing leaks in pipelines and predicting landslides - are about to get even faster and more accurate. EPFL ...

Sensing part presence in machines, in fixtures, and on conveyors is an important component of industrial automation. Error-proofing assembly and controlling sequence based on presence or absence of a ...

Sensors for the measurement of displacement based on a number of different physical principles are available for a wide range of applications. This article considers systems capable of resolutions of ...

DARPA has succeeded in creating hollow-core photonic-bandgap optical fiber, which allows light to travel along its length at around 99.7% the speed of light, or a 30% improvement over conventional ...