The most up-to-date word in telecommunications technology is Dense Wavelength Division Multiplexing. Dense wavelength division multiplexing (DWDM) is a technology that allocates to the operators of an optical network particular wavelengths or "colors" and mixes them in a sole strand of fiber. Dissimilar data is transmitted concurrently through lanes of light, which are de-multiplexed at the reception end and conveyed to the clients. Instead of installing more fibers or increasing the data transfer rate, the bandwidth of an optical link is ascendable by adding more wavelengths to the system. DWDM has been pioneered for applications in long-haul telecom networks, requiring bulky, sophisticated, and custom instrumentations. One essential component of DWDM system is Muxponder/ Transponder module. The persistence of this paper  is to refer to the hardware proposal enactment of the Muxponder/Transponder segment for 80 channel DWDM system functioning at distinct wavelengths in the C-band(1530nm-1565nm) centered around 193.1 THz frequency as per ITU-T Rec.G.694.1 grid, at 50 GHz channel spacing. The system shall support a combination of client interfaces –STM-16, STM-64, Gigabit Ethernet (as per IEEE 802.3 and 802.3ah) and 10G Ethernet LAN and WAN PHY as per IEEE 802.3ae.The DWDM system shall also be capable to interface G.709 based OTN client signal such as OTU-1 and OTU-2.

Index Terms- DWDM, LASER, Optical Fiber, Optical Signal Processing, SDH, SONET, Transponder.