640 Gbit/s and 1.28 Tbit/s polarisation insensitive all optical wavelength conversion
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Updated: Jun 11, 2026
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Hao Hu1, Evarist Palushani, Michael Galili
1DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Ørsteds Plads, DK-2800 Kgs. Lyngby, Denmark. huhao@fotonik.dtu.dk
Abstract:
We report the first demonstration of polarisation insensitive all-optical wavelength conversion (AOWC) for single wavelength channel 640 Gbit/s return-to-zero differential-phase-shift-keying (RZ-DPSK) signal and 1.28 Tbit/s polarisation multiplexed (Pol-Mux) RZ-DPSK signals using a 100-m polarisation-maintaining highly nonlinear fiber (PM-HNLF) in a polarisation diversity loop configuration. The AOWC is based on four-wave mixing in PM-HNLF. Error free performance is achieved for the wavelength converted signals. Less than 0.5 dB polarisation sensitivity is obtained.
