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12 August 2008 Lithium niobate cylinder fiber strain sensor and sonar detector
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Proceedings Volume 7099, Photonics North 2008; 709925 (2008)
Event: Photonics North 2008, 2008, Montréal, Canada
We have developed optical fibers with a thin approximately 40 to 60 nm thick Lithium Niobate Layer at the glass core and cladding boundary. These Lithium Niobate Cylinder Fibers (LNCF) are now in the process of being commercialized as strain gauges for bridges, tunnels, pipe lines and aircraft components. An application as a sonar sensor is also being investigated. LNCF strain sensors use light amplitude detection rather than phase detection. Amplitude detection is easier to implement and is substantially less costly. LNCF's when used as light amplitude sensing sonar detectors are over 1000 times more sensitive than standard Single Mode Fibers. LNCFs use so called "Non Propagating" light modes rather than the conventional propagating modes.
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Philipp Kornreich, Madhukar Bansal, Dawit Negussey, Ronald Drake, Zheng-Xuan Lai, James Flattery, and James Mandel "Lithium niobate cylinder fiber strain sensor and sonar detector", Proc. SPIE 7099, Photonics North 2008, 709925 (12 August 2008);

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