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Long-range Millimeter-resolution OFDR Based on 100 GHz Linear Frequency-sweep of Optical Source by Injectionlocking Technique and Cascaded FWM Process

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We demonstrate a high spatial resolution OFDR by utilizing injection-locking technique and cascaded FWM. A frequency sweeping span of ~100 GHz is obtained for realizing a 1.1 mm spatial resolution over 2 km measurement range.

© 2016 Optical Society of America

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