There is a thread about these GPON modules here: http://forum.mikrotik.com/t/usage-gpon-module-sfp-in-spain/104807/1
Maybe you can find some useful information there.
There is a thread about these GPON modules here: http://forum.mikrotik.com/t/usage-gpon-module-sfp-in-spain/104807/1
Maybe you can find some useful information there.