Abstract: Long-distance distributed fiber-optic sensing based on optical pulse coding is widely applied in structural health monitoring and geological disaster early warning. However, erbium-doped ...

An Osaka Metropolitan University-led research team investigated the decay time of coherent longitudinal optical (LO) phonons both in a GaAs 1−x N x epilayer and in a GaAs single crystal, to clarify ...

For certain high-security devices, such as card readers, ATMs, and hardware security modules, normal physical security isn’t enough – they need to wipe out their sensitive data if someone starts ...

Sam Barsanti has written about pop-culture for 10 years, and his work has appeared at The A.V. Club, Primetimer, IGN, and Collider. He has also contributed to the popular daily Hustle newsletter, ...

AI-driven process monitoring enhances the qualification of additively manufactured stainless-steel parts. By analysing high-frequency welding current and voltage signals in both the time and frequency ...

Abstract: Global telecommunications heavily rely on optical fibers as the foundation of their network infrastructure, making it imperative for network operators to ensure their dependability. The ...

A time domain reflectometer (TDR) measures reflections along a cable. It is similar in principle to radar. To measure those reflections, the TDR transmits an incident signal into the cable and watches ...