Tao Hu Juhao Li Kaiwei Zhang Fang Ren Qi Mo Yili Ke Cheng Du Zhijian Liu Yongqi He Zhengbin Li Zhangyuan Chen Experimental demonstration of bidirectional MDM-WDM-TDM-PON over low modal-crosstalk FMF. 1-3 2016 OFC https://ieeexplore.ieee.org/document/7537248 conf/ofc/2016 db/conf/ofc/ofc2016.html#HuLZRMKDLHLC16