From Fiber Layout to the Sensor: Preparation Methods as Key Factors for High-Quality Coupled-Core-Fiber Sensors.

During recent years, the optical-fiber-based simultaneous sensing of strain and temperature has attracted increased interest for different applications, e.g., in medicine, architecture, and aerospace.

Knowledge about COVID-19 between Children and Adolescents with and without High Intellectual Abilities.

Among the characteristics within people with high intellectual abilities, some that stand out are a better handling of information, asynchronous development, high awareness, and sensibility. Therefore, our goal was to learn if, due to these characteristics, the children and adolescents with high intellectual abilities have a better understanding and comprehension about COVID-19 compared to those with average intellectual abilities. A qualitative study was conducted at the beginning of the lockdown with 649 children with and without high intellectual abilities.

Coupled-core fiber Bragg gratings for low-cost sensing.

Sensors based on Bragg gratings inscribed in conventional single mode fibers are expensive due to the need of a sophisticated, but low-speed, interrogation system. As an alternative to overcome this issue, in this work, it is proposed and demonstrated the use of coupled-core optical fiber Bragg gratings. It was found that the relative reflectivity from such gratings changed when the coupled-core fiber was subjected to point or periodic bending.