针对分布式卫星光网络的动态路由特性,提出了一种基于两级偏移滤波的波长保持型全光再生方案。该方案利用半导体光放大器(SOA)和高非线性光纤(HNLF)中自相位调制(SPM)效应感应的频率啁啾具有相反符号的特点,对经过其中的信号分别进行红移滤波和蓝移滤波,从而不仅实现了对光信号的两级再生,而且有效抵消了各自滤波造成的频率偏移,实现了再生前后信号波长的连续性。同时该方案具有结构简单、体积小、重量轻等特点,能够满足星上应用对有效载荷的限制。研究结果表明:该方案能够将信号Q因子提高超过1.5dB,且与一级再生结果相比较,可以使误码率(BER)进一步降低一个量级。 Aiming at the dynamic routing of distributed satellite optical networks, a wavelength-preserving all-optical regeneration scheme based on two-stage offset filter is proposed. The scheme utilizes the opposite sign of the frequency chirp induced by the self-phase modulation (SPM) effect in a semiconductor optical amplifier (SOA) and a high nonlinear fiber (HNLF), and performs red-shift filtering and blue-shift filtering , So that not only the two-stage regeneration of the optical signal but also the frequency offset caused by the respective filtering are effectively canceled, and the continuity of the signal wavelength before and after the regeneration is achieved. At the same time the program has the characteristics of simple structure, small size, light weight and so on, which can satisfy the limitation of the payload on the satellite. The results show that this scheme can improve the signal Q factor by more than 1.5dB, and can further reduce the bit error rate (BER) by one order of magnitude compared with the first-stage regenerative result.