Hitless Monitoring of Wavelength and Mode-Division Multiplexed Channels on a Silicon Photonic Chip

On-chip non-invasive monitoring of WDM-MDM channels transmitted through silicon-photonic waveguides is achieved with a ContactLess Integrated Photonic Probe (CLIPP). Simultaneous monitoring of four intensity-modulated 10 Gbit/s channels is demonstrated with no penalty on system performance