Highly efficient single-photon detection at communication wavelengths by use of upconversion in reverse-proton-exchanged periodically poled LiNbO₃ waveguides

2005/07/01 by Carsten Langrock, Eleni Diamanti, Rostislav V. Roussev +3 · 1 citation
Engineering · Physics and Astronomy · #Photonic and Optical Devices #Advanced Fiber Laser Technologies #Photorefractive and Nonlinear Optics

paper · doi:10.1364/ol.30.001725

openalex publication_date 2005/07/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/30

Abstract

Conventional single-photon detectors at communication wavelengths suffer from low quantum efficiencies and large dark counts. We present a single-photon detection system, operating at communication wavelengths, based on guided-wave frequency upconversion in a nonlinear crystal with an overall system detection efficiency (upconversion + detection) exceeding 46% at 1.56 microm. This system consists of a fiber-pigtailed reverse-proton-exchanged periodically poled LiNbO3 waveguide device in conjunction with a silicon-based single-photon counting module.

Citations

• Demonstration of a low-noise near-infrared photon counter with multiphoton discrimination

Cited by

• Eleni Diamanti [wikipedia]