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Opt Lett. 2006 Mar 15;31(6):727-9.

1.5 microm photon-counting optical time-domain reflectometry with a single-photon detector based on upconversion in a periodically poled lithium niobate waveguide.

Author information

  • 1Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305-4088, USA. ediam@stanford.edu

Abstract

Optical time-domain reflectometry (OTDR) is one of the most powerful tools in the characterization of optical fiber links. We demonstrate a photon-counting OTDR system at 1.5 microm with a single-photon detector, which combines frequency upconversion in a periodically poled lithium niobate waveguide and a silicon avalanche photodiode. The system exhibits high sensitivity, good spatial resolution, and short measurement time.

PMID:
16544604
[PubMed]
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