At the University of Ottawa, physics professor Dr. Xiaoyi Bao is turning tiny threads of glass into guardians of public safety. Her novel Distributed Acoustic Sensor (DAS) technology transforms ordinary optical fibres into ultra-sensitive “ears” that detect stress, cracks, and vibrations in infrastructure ranging from bridges and pipelines to railways and reactors.

Instead of relying on visual inspections, DAS listens for trouble in real time, offering early warnings before disaster strikes. Bao’s innovations, including distributed sensing techniques and low-noise lasers, have reshaped how we monitor structural health. Her sensors are now widely used in industries such as oil, gas, aerospace, and public infrastructure, where safety, security and reliability are top priorities.

DAS saves lives, protects ecosystems, and reduces maintenance costs by replacing millions of conventional sensors with Bao’s more effective – and predictive – alternatives. As climate change accelerates infrastructure wear and tear, Bao’s work offers a powerful, practical solution and helps Canada build a safer, smarter, and more resilient future for generations to come.