Distributed Fiber Optic Sensing is increasingly regarded as a future-oriented technology for Structural Health Monitoring (SHM) of bridge infrastructure, offering quasi-continuous measurements of strain and temperature along entire structural elements. Fiber Bragg Gratings (FBGs) began to be used as strain sensors in the early 1990s, and approximately a decade later, fiber distributed sensing techniques based on Rayleigh or Brillouin backscattering became available. Their high sensitivity and immunity to electromagnetic interference make them ideal for use in diverse environments. Opsens Solutions fiber optic strain and deformation sensors are potentially a cost-effective approach to meet long term operational requirements, and to reduce maintenance costs.
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