Ciena CN-100-A4H Dense Wavelength Division Multiplexing Module

The CN-100-A4H is a four-channel DWDM mux/demux module from Ciena that operates on a 100 GHz ITU grid. This CN-100-series module provides four independent channels (MUX/DEMUX) on channels 56, 57, 58, and 59, enabling compact DWDM capacity expansion within compatible chassis. The “A4H” designation explicitly denotes four channels in the CN-100 family and is cataloged as a 4-CHAN Dense Wavelength Division Multiplexing Module. In practical deployments, the four channels are used to multiplex or demultiplex 100 GHz-spaced DWDM signals, allowing operators to increase service density without adding extra fibers. As a compact, carrier-grade module, it is designed for integration into Ciena’s DWDM network architectures and supports four wavelengths in a single assembly within the CN-100 hardware ecosystem.