We implement dense wavelength division multiplexing (DWDM), which couple and transmit optical signals of different frequencies to the optical fiber, by using the tremendous bandwidth of SMES low loss area in the DWDM system and re. We implement dense wavelength division multiplexing (DWDM), which couple and transmit optical signals of different frequencies to the optical fiber, by using the tremendous bandwidth of SMES low loss area in the DWDM system and recovery in optical networks. It is convenient to expand and upgrade and ensure high survivability of the optical network.We provide this DWDM technology from Springer paper as, An optical communication system is composed of a transmitter, communication channel & receiver. The transmitter's role is to convert the electrical signal into optical form & launch the result optical signal into an optical fiber. The receiver converts distorted & attenuated weak optical signa. We mainly implement this DWDM system for M.Tech projects composed of, 1. Electrical pulse generator. 2. Optical modulation. 3. Optical source. 1. Applicable for high capacity, long-distance optical fiber communication due to tremendous bandwidth. 1. It is composed of photoelectric detectors, filters & demodulators.We implement the following methods in optisystem as, 1. It processes optical power from one channel to a multi-channel system that is spilled over into the adjacent channel. They are channel power reduction, increased dispersion, increased channel spacing, and fiber photon power peak reduction. 1. It is the result of interaction among vibrating ato. We proposed more than 75+ optisystem projects. The applications are given as, 1. ASE broadband sources. 2. Raman & hybrid Raman/ EDFA simulation. 3. Transmitter, receiver, and amplifier design.