Proposed is an enhanced fiber expander with active coexistence (ACEX-RE), composed of a pair of integrated hybrid optical amplifiers (EDFA and SOA) and coexistence element (CEX) modules. The modules are installed on the central exchange (CO) together with the OLT system as the intensifier of downstream/upstream optical signals and the preamplifier respectively. Under the downstream and upstream wavelengths of 1577 and 1270nm, the performance of the XGS-PON system consisted of GPON and TWDM-PON was tested. The results show that the proposed ACEX-RE can support multi-rate XGS-PON with a maximum operating distance of 35km, a beam splitting ratio of 1∶128, and a link loss of up to 44dB.