Relative calibration for a polarization interference imaging spectrometer

A polarization interference imaging spectrometer (PIIS) for remote sensing is developed. Its operation principle and typical configuration are introduced. A polarization beam-splitter is its key component. The principle of calibration for the PIIS is introduced. The results of relative calibration for the PIIS are given. After the calibration, the responding uniformity of the detector of the PIIS to an expanded uniform light source is largely improved and the quality of the pictures obtained by the PIIS is obviously clear and accurate to the aims. Some applications and expectations of a PIIS are put forward.