Open AccessA Pixilated Spectrometer Based on Single Liquid Crystal and Sparse Algorithm
Author(s) -
Feiying Sun,
Liangping Xia,
Zheng Yang,
Jun Cui,
Ziyin Zhang,
Chang bin Nie,
Danjun Liu,
Shaoyun Yin,
Guoxing Zheng,
Peng Wu,
Ruofu Yang,
Chunlei Du
Publication year - 2016
Publication title -
ieee photonics journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 73
eISSN - 1943-0655
pISSN - 1943-0647
DOI - 10.1109/jphot.2016.2597190
Subject(s) - engineered materials, dielectrics and plasmas , photonics and electrooptics
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.