S-Band WDM Transmission Using PPLN-Based Wavelength Converters and 400-Gb/s C-Band Real-Time Transceivers

Multi-band WDM transmission beyond the C+L-band is a promising technology for achieving larger capacity by limited number of installed fibers. In addition to C- and L-band, we can expect use S-band as next band. Although development optical components new bands, particularly transceivers, entails resource dispersion, which one barriers realization multi-band systems, wavelength conversion transparent all-optical signal processing enables band using existing components. Therefore, proposed system including such made it possible transceiver performing whole-band without As preliminary verification demonstrate S-band, investigated application novel converter between C-band consists periodically poled lithium niobate waveguide, system. We first characterized efficiency noise figure estimated performance through converter. Using evaluated converters test signals 64 channels arranged in at 75-GHz intervals, constructed an experimental setup 80-km standard single-mode fiber. then demonstrated error-free real-time 400-Gb/s DP-16QAM after forward error correction decoding. From results, was clarified that thewavelength realizes uniformlossless covering whole effectively achieves transmission, verified improvement be expected applying combination with