ROF-ModBox-SSB-1550 Suppression Carrier Single Sideband Modulation Unit o se oloa tu'ufa'atasia tele a Rofea photoelectric fa'atasi ai ma aia tatau tau le atamai.
O le oloa e tuʻufaʻatasia le Mach-Zehnder faʻalua tutusa modulator, faʻaituau pule, RF avetaʻavale Ma isi vaega talafeagai i totonu o se iunite, e le gata ina faʻafaigofie ai le tagata faʻaoga, ae faʻaleleia atili ai le faʻatuatuaina o le MZ intensity modulator.O le a le mea e sili atu, e mafai ona faʻapipiʻiina e tusa ai ma manaʻoga o tagata faʻaoga.