In order to clarify the superiority of hybrid transmission performance in optical wireless transmission system, output characteristics of single energy transmission, single communication, and hybrid transmission were investigated in 0.1 m transmission link with received optical power of 3.5 mW and date rate of laser source of 1 kbps. When the single energy transmission system has a load of 4 kΩ in series with inductance, the maximum output power of the panel is 1.82 mW, when the hybrid transmission system has a load of 5 kΩ in series with inductance, the maximum output power of the panel is 1.82 mW, which is 15% higher than the former. The output signal waveform of the hybrid transmission system is distorted at a low load in series with capacitance. Optimized load can improve the performance of waveform. The amplitude in hybrid transmission system is higher than that of the single transmission system at 1.52 V in same conditions.