Based on an InGaAs near-infrared focal plane arrays,a integrated polarization focal plane detector is designed,fabricated and tested which may be used for dis criminating the camouflaged targets.This detector selects the polarization light according to the monolithic integrated aluminum nanowires lin ear polarization filters which are etched on an infrared spectral imaging sensor,and its average extinction ratio is 8.05in our test.The analysis results show that the light crosstalk decreases the extinction ratios,and may blur the polarized images.Besides that ,the crushed nanowires not only impress signal to noise ratios (SNR) of Stokes parameter s,but also restrict the dynamic range of light responses.