The QDDCO8H supports operation from 400G to 800G per wavelength, in 100G steps, and both Ethernet and OTN clients. The QDDCO8H supports QPSK modulation, for operation at 400G per wavelength, and shaped-PCS 16QAM operation, for operation from 500G to 800G per wavelength. The extended reach and greater performance of the QDDCO8H enables multi-span connections over greater distances and through intermediate ROADM pass-throughs for metro and regional applications.