Patent ID: 7769256

Claim:
A system for performance monitoring for a DWDM network, the system comprising: a first photonic integrated device configured to receive a first optical signal and output a first plurality of electrical signals for a first plurality of channels respectively, the first plurality of channels corresponding to a first plurality of wavelength ranges associated with the first optical signal; a first clock and data recovery device configured to receive the first plurality of electric signals and retime the first plurality of electric signals; a first switch device coupled to the first clock and data recovery device without an error correction device coupled between the first clock and error recovery device and the first switch device; a first interface in the first switch device, the first interface being configured to output a second plurality of electrical signals; a second interface in the first switch device, the second interface configured to add or drop one or more channel devices; an output port in the first switch device configured to provide information associated with one of the first plurality of channels; and an error detection device coupled to the output port, the error detection device being configured to monitor and report performance of the one of the first plurality of channels.