40 research outputs found
Harnessing the power of complex light propagation in multimode fibers for spatially resolved sensing
The propagation of coherent light in multimode optical fibers results in a
speckled output that is both complex and sensitive to environmental effects.
These properties can be a powerful tool for sensing, as small perturbations
lead to significant changes in the output of the fiber. However, the mechanism
to encode spatially resolved sensing information into the speckle pattern and
the ability to extract this information is thus far unclear. In this paper, we
demonstrate that spatially dependent mode coupling is crucial to achieving
spatially resolved measurements. We leverage machine learning to quantitatively
extract this spatially resolved sensing information from three fiber types with
dramatically different characteristics and demonstrate that the fiber with the
highest degree of spatially dependent mode coupling provides the greatest
accuracy.Comment: 17 pages and 7 figure
An evidence-based review of creative problem solving tools: a practitioner’s resource
Creative problem solving (CPS) requires solutions to be useful and original. Typically, its operations span problem finding, idea generation and critical evaluation. The benefits of training CPS have been extolled in education, industry and government with evidence showing it can enhance performance. However, while such training schemes work, less is known about the specific tools used. Knowing whether a particular tool works or not would provide practitioners with a valuable resource, leading to more effective training schemes, and a better understanding of the processes involved. A comprehensive review was undertaken examining the empirical support of tools used within CPS. Despite the surprising lack of research focusing on the use and success of specific tools some evidence exists to support the effectiveness of a small set. Such findings present practitioners with a potential resource that could be used in a stand-alone setting or possibly combined to create more effective training programmes