对垂直双抽运结构的偏振复用信号在半导体光放大器(SOA)中的全光波长变换(AOWC)进行了研究。理论分析了激光器线宽对此系统性能的影响，仿真研究了偏振复用-正交频分复用（PM-OFDM）信号在此系统中传输的性能。仿真结果显示，当系统的光信噪比为10 dB时，10 Gbit/s的PM-OFDM信号经过SOA中的四波混频效应后，在接收端能够实现无串扰偏振不敏感PM信号的接收，其中x和y方向对应的系统误码率分别为1.16×10-4和1.06×10-5。仿真结果表明激光器线宽，OFDM信号的子载波个数，信道功率，以及OFDM调制格式均与系统波长转换效率有关，且仿真结果与理论推导结果一致。

The all-optical wavelength conversion (AOWC) based on orthogonal dual-pump for polarization multiplexing signal in semiconductor optical amplifier (SOA) is investigated. The influence of laser line-width on the performance of all-optical wavelength conversion is theoretically investigated, and the transmission performance of polarization-multiplexing-orthogonal-frequency-division-multiplexing (PM-OFDM) signal in the system is simulated. The simulation results show that when the optical signal-to-noise ratio is 10 dB, the polarization insensitive signal can be received as two light waves without crosstalk as a result of four-wave mixing effect for 10 Gbit/s PM-OFDM signal propagating in the SOA, and the bit error rates are 1.16×10-4 in x-direction and 1.06×10-5 in y-direction, respectively. Meanwhile, the simulation results indicate that laser line-width, number of sub-carriers of OFDM signal, channel power, and modulation format, obviously influence the AOWC conversion efficiency. The theoretical derivation is well consistent with the simulation result.