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Updated: Aug 4, 2026
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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
1.5 microm photon-counting optical time-domain reflectometry with a single-photon detector based on upconversion in a
Eleni Diamanti1, Carsten Langrock, M M Fejer
1Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305-4088, USA. ediam@stanford.edu
Optics Letters
|March 21, 2006
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.
