A perpendicular magnetic recording system has a write head having a main coil and main pole that directs write flux in a direction perpendicular to the recording layer in the magnetic recording medium, and a transverse auxiliary pole that injects auxiliary magnetic flux into the write pole at an angle to the primary or perpendicular axis of the write pole. The sources are generally cameras which may be stationary cameras or moving cameras that rotate as are commonly used in the surveillance industry. The transmission unit that receives the transmission characteristics information controls a delay section that adjusts a delay amount of relative phases of drive signals of the modulation sections, so that the transmission characteristics of the polarization multiplexed light are within an allowable range.