Through accurately measuring the phaseshifted sensitivity of the head of optical fiber hydrophone using phased generated carrier demodulation technique, calibration of phaseshifted sensitivity of optical fiber hydrophone in the frequency range 20 Hz to 10 kHz was realized. At the frequencies from 20 Hz to 1.25 kHz, the calibration method was standing wave tube comparison method. And at the frequencies from 1.25 kHz to 10 kHz, the calibration method was freefield toneburst comparison method. The No.35 TMD optical fiber hydrophone was calibrated by the calibration system. The calibration results show that the phasedshifted sensitivities measured by two methods are very close, and the deviation value of sensitivity at the frequency 1.25 kHz is only 0.8 dB. Analysis of measurement uncertainties prove that the expand uncertainty (at k=2) of this calibration system is 0.9 dB.