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EAST Knowledge - Locating Intrusions Using Fiber Optics

Gresham Library Story Room
385 NW Miller Ave
Gresham, OR 97030, US (map)
Public WiFi

385 NW Miller Ave, Gresham, Oregon



EAST Knowledge invites you to attend our fifth meeting! All are welcome!

  • What: Locating Intrusions Using Fiber Optics
  • Who: Jim Rulla
  • Where: The Story Room at the Gresham Library
  • When: 10:30am-Noon, Saturday, April 18, 2015
  • Why: Sharing what we know

Interferometers measure distances to within fractions of the wavelength of light. Put a couple of these incredibly sensitive devices on the fence around an airport, and you can not merely detect a would-be intruder — you can locate him. Put a pair on a pipeline, and you can not merely detect nearby digging that could damage the pipe — you can locate its source. You might even be able to detect — and perhaps even locate — leaks in the pipe.

The detection and location mechanisms are fascinating examples of clever engineering. I'll explain how these patented systems work and illustrate new algorithms that improve performance.