Method to improve the quality of Moiré signals by ± first-order Moiré fringes

✍ Scribed by Xinmin Wu; Jinbang Chen; Zhishan Gao; Yingshi Zhu; Feiming Chen

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 110 KB
• Volume: 31
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.1366

✦ Synopsis

Abstract

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.