1.5 microm photon-counting optical time-domain reflectometry with a single-photon detector based on upconversion in a periodically poled lithium niobate waveguide.
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.
Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305-4088, USA. ediam@stanford.edu
Eleni
E
Diamanti
Carsten
C
Langrock
M M
MM
Fejer
Yoshihisa
Y
Yamamoto
Hiroki
H
Takesue