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

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Original languageEnglish
Pages (from-to)91-93
Journal / PublicationMicrowave and Optical Technology Letters
Issue number2
Publication statusPublished - 20 Oct 2001


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.

Research Area(s)

  • Grating pair, Moiré fringe, Phase