Theprincipleoffiberopticscouplingpressuresensorwithmicro-powerdissipationisintroducedaswellastheuseoftwo-waysignalsinglefibertransfer(measuresignalandreferencesignal)toconductaproportionalmeasure.Italsodiscussestheadoptedwaysforimprovingthestabilitytemperaturedriftandthenoiseofthemea-suringsystem.