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针对强度调制新型偏振光谱仪,研究了基于傅里叶变换法实现偏振光谱信息解调的可行性.结合强度调制偏振光谱仪实现偏振光谱信息调制的机理,给出了采用傅里叶变换法实现偏振光谱信息解调过程的完整数学推导,并对解调过程进行了计算机仿真模拟.模拟结果表明:基于傅里叶变换的解调方法可以高保真获取待测光辐射的偏振光谱信息,将该方法应用于强度调制偏振光谱仪偏振光谱信息的解调是可行的.
For intensity modulation of new polarization spectrometer, the feasibility of demodulation of polarization spectrum information based on Fourier transform is studied. Combining the intensity modulation polarization spectrometer to realize the modulation mechanism of polarization spectrum information, the Fourier transform method is used to realize the polarization spectrum Complete mathematical derivation of information demodulation process and computer simulation of the demodulation process.The simulation results show that the demodulation method based on Fourier transform can obtain the polarization spectrum information of the optical radiation to be measured with high fidelity and the method is applied It is feasible to demodulate the polarization spectrum of intensity-modulated polarization spectrometer.