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A 1.5 μm single-photon detector, which combines up-conversion in a PPLN waveguide with a silicon avalanche photodiode, is used to demonstrate photon-counting OTDR. The system exhibits good sensitivity, high spatial resolution and small measurement time.
Lasers and Electro-Optics, 2005. (CLEO). Conference on (Volume:2 )
Date of Conference: 22-27 May 2005