Hi Hermawan Widiyanto,
We could design Radio over fiber in optisystem software,
I am uploading the image of design
For more details you can use as reference :
http://www.redes.unb.br/lasp/files/events/ICUMT2012/papers/1569641487.pdf
http://www.iosrjournals.org/iosr-jece/papers/Vol9-Issue2/Version-4/E09243742.pdf
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.259.5265&rep=rep1&type=pdf
http://www.ijcnwc.org/papers/vol3no32013/13vol3no3.pdf