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Method to improve the quality of Moiré signals by ± first‐order Moiré fringes
Author(s) -
Wu Xinmin,
Chen Jinbang,
Gao Zhishan,
Zhu Yingshi,
Chen Feiming
Publication year - 2001
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.1366
Subject(s) - moiré pattern , optics , grating , amplitude , quality (philosophy) , signal (programming language) , physics , energy (signal processing) , microwave , materials science , computer science , quantum mechanics , programming language
In an amplitude grating system of small grid pitch, the diffractive effect is distinctive. Its energy will be about 10–40% of the total energy. The diffractive light is the root cause of deterioration of the contrast and sinusoidal property of the Moiré signal. The relations between the phase of ± first‐order Moiré fringes and other factors, such as the gap of the grating pair, are analyzed. It is proposed to use ± first‐order Moiré fringes to obtain high‐quality signals. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 31: 91–93, 2001.