Acta Optica Sinica, Volume. 35, Issue 9, 911001(2015)
Analysis and Comparison of Signal-to-Noise Ratio of Spatially Modulated Interference and Diffraction Grating Imaging Spectrometers
Sagnac spatially-modulated interference imaging spectrometer and Offner convex diffraction grating imaging spectrometer are focused on,and their signal- to- noise performance is seriously analyzed.Through derivation of the spectral radiance of their acquired image pixels under same observation condition,it is shown that spatially-modulated interference imaging spectrometer no longer has high throughput and multiplex advantages so that its signal-to-noise is lower than diffraction grating imaging spectrometer.Further,the latter’s signal-tonoise ratio advantage becomes more significant as the increase of spectral band number.
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Jin Yangming, Wang Yan, Zhao Zhicheng, Chen Xinhua, Song Wenbao, Shen Weimin. Analysis and Comparison of Signal-to-Noise Ratio of Spatially Modulated Interference and Diffraction Grating Imaging Spectrometers[J]. Acta Optica Sinica, 2015, 35(9): 911001
Category: Imaging Systems
Received: Mar. 2, 2015
Accepted: --
Published Online: Aug. 27, 2015
The Author Email: Yangming Jin (jymgood@126.com)