FOSA webinar Integrated Strain, Temperature, & Passive Seismic sensing - OptaSense

In 2020 we presented New Paradigms for Fiber Optic Sensing. Now in 2022 we are pleased to return to these topics with a raft of practical outcomes from the field. Conventional systems exploiting Rayleigh backscatter work predominantly in the acoustic domain and are colloquially termed DAS. OptaSense opened the door to delivering precision strain sensing, temperature sensing and other parallel real-time measurands – expanding beyond DAS.

We present experiences from monitoring landslide prone slopes: exploiting static and dynamic strain monitoring capabilities together with continual, unattended passive seismic monitoring from low frequency acoustics to probe the behavior of the soil not only in the vicinity of the fiber but also tens of meters offset. We illustrate from practical experience with pipelines how we separate the temperature component from the strain component to look at stability in subsidence prone regions.

Finally, we look in closer detail at thermal monitoring and what that can tell us about soil structure via thermal diffusivity. Together these measurements assemble to tell us not just whether activity is present (DAS) but what the ongoing state of the ground is in the vicinity of the fiber to help monitor stability and further to anticipate degradation by monitoring of intimate soil properties (DRS). Presented by Dr. Chris Minto.

Dr. Chris Minto is Engineering Director with OptaSense and has been involved with the company since inception in 2007. He currently looks after the twin pillars of research and new product development and is responsible for future growth and pioneering new applications. He additionally is responsible for quality and engineering assurance across all sectors of the company. Chris works with both the delivery teams and product development teams to ensure that NPD is led by the voice of the customer and is backed by robust, professional engineering standards.

Chris brings to OptaSense over 25 years of acoustic sensing experience and operational excellence with a background in sonar system and acoustic transducer design. He has a PhD in Physics, is a Member of the Institute of Physics and is both a Chartered Engineer and Chartered Physicist (CPhys, CEng MInstP).

For more information about OptaSense, please visit https://www.optasense.com/

For more information about the Fiber Optic Sensing Association please visit https://www.fiberopticsensing.org/