Monolithic Integrated Semiconductor Optical Amplifier With Broad Spectrum, High Power, and Small Linewidth Expansion. - Xin Li; Lei Liang 001; Li Jun Wang; Li Qin; Yong Yi Chen; Yu Bing Wang; Yue Song; Yu Xin Lei; Peng Jia; Yu Gang Zeng; Chuan-Tao Zheng; Huan Zhao (IEEE Access, 2021)