A Pixilated Spectrometer Based on Single Liquid Crystal and Sparse Algorithm

作者：Sun, Feiying; Xia, Liangping; Yang, Zheng; Cui, Jun; Zhang, Ziyin; Bin Nie, Chang; Liu, Danjun; Yin, Shaoyun; Zheng, Guoxing; Wu, Peng; Yang, Ruofu; Du, Chunlei^*

来源：IEEE Photonics Journal, 2016, 8(5): 2600506.

DOI：10.1109/JPHOT.2016.2597190

• Integrated optics devices
• spectroscopy
• high resolution
• liquid crystals

A method of achieving integrated microspectrometer with small size, high-energy efficiency, and high spectrum resolution is proposed. This spectrometer utilizes the single-pixilated liquid crystal (LC) and a matched sparse representation algorithm. The properties of compact size and high-energy efficiency are benefit to the configuration of single-pixilated LC which forms a filter array in the time domain for the polarization interference turned by driven voltage. The high spectrum resolution is obtained with the application of sparse representation of the nonnegative L1 minimization algorithm. By theoretical derivation, the physical model of the microspectrometer is set up, and the experimental results indicate the effectiveness of spectrum reconstruction with a spectrum resolution of about 0.2 nm.

• 出版日期2016-10
• 单位中国科学院重庆绿色智能技术研究院; 武汉大学