The Investigation and Simulation of a Novel Spatially Modulated Micro-Fourier Transform Spectrometer
KONG Yan-mei1,2,LIANG Jing-qiu1*,WANG Bo1,2,LIANG Zhong-zhu1,XU Da-wei1,2,ZHANG Jun3
1. State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China 2. Graduate University of the Chinese Academy of Sciences, Beijing 100039, China 3. Department of Optoelectric Engineering, Jinan University, Guangzhou 510632, China
Abstract：Fourier transform spectrometer (FTS) is widely used in science and industry for the measurement of electromagnetic spectra，and it’s trend of minimization is particularly pronounced in many applications. A novel model of a micro FTS with no moving parts is proposed and analyzed. During the analysis, the gradients which mainly introduce the phase error are accounted for in details. Based on these assumptions and the improved Mertz phase correcting method, the spectrum of the signal is simulated, given the real extended light source. The resolution can reach 3.43 nm@800 nm, with high SNR limiting resolving ability 6.8 dB. The novel micro FTS could be made by MOEMS technology, which has some advantages over the conventional micro dispersive spectrometers based on the traditional technology, and this method can also afford some new concepts on the design of spectrometers. The research work is underway to demonstrate the theory.
