10G XFP 120km

Can 10G SFP XFP optical tranceiver reach 120km? 万兆光模块可以传输120km距离吗？答案是不可以。
The answer is NOT. Because sensitivity can not make up to -26dBm, and the output optical power maximus is fixed. So the optical budget is limited. In fact, the max transmission distance is 100km. If the fiber cable loss much each kilometer, then it just can reach up to 80km.