IEEE Photonics Technology Letters
Spectrally Multiplexed Upconversion Detection With C-Band Pump and Signal Wavelengths
Michael Silver, Paritosh Manurkar, Yu‐Ping Huang, Carsten Langrock, M. M. Fejer, Prem Kumar, Gregory S. Kanter
Abstract
We demonstrate a multiplexing scheme for upconversion-based single-photon detection using a waveguide with multiple phase-matching peaks. Two different signal wavelengths are upconverted using two distinct pump wavelengths, where all the wavelengths are in the 1550-nm band. Background photon generation rates-4per pulse with high internal conversion efficiencies are observed using 20-ps-long pump pulses.