Hi folks we have a point and have a 63km between point A to point B. We have a sigle fiber ( only one fiber) and use a fiberstore sfp+ 10GB dibi 1270/1330 module to connect these sites. All attenuation are okI don¹t have any trouble on fiber . I have received this signal on my sfp+: Receiver signal average optical power : 0.0026 mW / -25.85 dBm Does anyone know if have some possible to amplifier this scenario to get more 7db ? Is it possible to put any booster or any way to solve this? I think to use a optical PreAmlifierbut I don¹t know if is possible because my scenario have just one fiberor, use a ROPA- remote optical pumping amplifier) because I have 63km Does anyone have some idea? Rodrigo Augusto Gestor de T.I. Grupo Connectoway http://www.connectoway.com.br <http://www.connectoway.com.br/> http://www.1telecom.com.br <http://www.1telecom.com.br/> * rodrigo@connectoway.com.br <mailto:rodrigo@connectoway.com.br> ( (81) 3497-6060 ( (81) 8184-3646 ( INOC-DBA 52965*100