Discussion on the Calibration Method of Depolarized Light Source
Depolarized light source is a kind of light source designed for special applications,and its putout spectrum has extremely low polarization(<5%),which plays an important role in the fields of fiber optic sensing spectral analy-sis,and medical imaging.The existing specifications and standards are not applicable to the calibration of defocused light sources,and the test results cannot be effectively traced and the consistency of product quantity values can not be guaranteed.The metrological characteristics,calibration conditions,calibration items,calibration methods and calibration results of the defocusing light source are discussed,and its application in the measurement and calibration of optical passive devices is also listed.It is found that the depolarizing light source can remove the influence factors of polarimetric loss and the sensitivity of detector to polarization in the calibration of the polarization extinction ratio of passive devices,so that the calibration value is stable and accurate.The depolarizing light source can better reflect the performance index of the extinction ratio tester,and this research can provide reference for the calibration and ap-plication of the depolarizing light source.
defocused light sourcecalibrationmetrological characteristiccallibration methodcalibration result
万方数据
维普
