2023. A Novel Flattened Gain RAMAN-Photonic Crystal Quantum Dot Semiconductor Hybrid Optical Amplifier in U Band for Super Dense Wavelength Division Multiplexing System. Indian Journal of Engineering and Materials Sciences (IJEMS). 30, 6 (Dec. 2023), 796. DOI:https://doi.org/10.56042/ijems.v30i6.480.