TheFOGsconsistoftheoneLightSourceat1550nmwavelengths(SLD),Depolarizer(DP),oneorthreePhotoectors(PD),fiberSplitters(FS)todividethelightintotwoorthreeparts,oneorthreesetsofringinterferometerstosenseoneorthreesetsofringinterferometerstosenseoneorthreeorthogonalangularrate,andprintedcircuitboardsinstalledsignalprocessingcircuits.Inthisdesignamultifunctionintegratedopticchip(MIOC),fabricatedbyHighTemperatureProtonExchangeprocesssisusedforsplittingthelightintoclockwiseandcounterclockwisewaves,lightpolarizationandforelectro-opticallyimpartingaphasemodulationtothelightwavesintheloop.