XKL Muxponders are a combined Transponder, and a Mux/Demux housed a single 1RU (One Rack Unit) or 2RU configuration. These systems enable customers to soft-configure the aggregation of 1G through 400G services, including optical amplifiers for extending network reach, filters, protection solutions, and other optical components required for any optical network. Systems can be “stacked” using XKL Mux/Demux (DMD) solutions, enabling clients to scale the architecture as future bandwidth requirements dictate.