Zichuan Zhou, Jinlong Wei, Kari A. Clark, Eric Sillekens, Callum Deakin, Ronit Sohanpal, Yuan Luo, Radan SlavĂ­k, Zhixin Liu: Multipoint-to-point data aggregation using a single receiver and frequency-multiplexed intensity-modulated ONUs. OFC 2022: 1-3