Efficient second harmonic generation in nanophotonic waveguides for optical signal processing

摘要

We report very efficient second harmonic generation in membrane photonic crystal waveguide. The combination of absorption-free material and slow-light enhancement enables a large harmonic generation efficiency. A peak pump power of about 450 mW generates up to 45 µW peak second harmonic power over a broad spectral range. The signal is exploited to demonstrate optical performance monitoring of data at 42 Gb/s.