A new polarization filter based on weighted combination

Conventional polarization filters can mitigate an interference by using the orthogonal vector of the interference polarization, but leading to distortion of the target signal in its amplitude and phase. A null phase-shifting polarization filter can reconstruct the original target signal. However, it needs some complex operations, such as a linear polarization-vector translation and compensations in amplitude and phase. In this paper, a weighted combination polarization filter is proposed, which retains the original target signal while suppressing the interference within one step. The simulation results show that the new filter is an effective means to remove the interference in the polarization domain.