Monolithic integration of VCSEL and coupled cavity RCEPD for short-reach single-fiber bi-directional optical interconnectsQi Wei, Kai Liu, Jun-Wei Luo, Hui-Ze Fan, Xiao-Min Ren, Yong-Qing Huang, Jia-Rui Fei, Xiao-Feng Duan, Qi Wang and Shi-Wei CaiEur. Phys. J. D, 73 8 (2019) 186DOI: https://doi.org/10.1140/epjd/e2019-100166-2