Up-conversion single-photon detectors based on integrated periodically poled lithium niobate waveguides
arXiv:1902.06464 · doi:10.1364/JOSAB.35.002096
Abstract
We demonstrate up-conversion single-photon detectors based on integrated periodically poled lithium niobate waveguides, which incorporate two mode filters and a directional coupler. The two mode filters are optimized for the fiber-waveguide coupling efficiencies for 1550 nm and 1950 nm respectively while the directional coupler plays the role of wavelength combiner, making the overall system portable and low-cost. The two wavelengths pump each other in our detection system. We achieve detection efficiencies of 28% for 1550 nm and 27% for 1950 nm, respectively. This scheme provides an efficient integrated single-photon detection method for any two well-separated spectral bands in the whole low-loss range of lithium niobate waveguides.
11pages, 6 figures
References in corpus (5)
- Superconducting nanowire single-photon detectors: physics and applications
- NbTiN superconducting nanowire detectors for visible and telecom wavelengths single photon counting on Si3N4 photonic circuits
- High resolution optical time domain reflectometer based on 1.55um up-conversion photon-counting module
- Tunable Up-Conversion Photon Detector
- Integrated four-channel all-fiber up-conversion single-photon-detector with adjustable efficiency and dark count