Definition of optical grating

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Photonics Dictionary

optical grating: An optical grating, in the context of optics and physics, refers to a device with a periodic structure of closely spaced, parallel slits or rulings. These slits or rulings act as obstacles to the passage of light and cause the incident light to diffract, producing a distinctive pattern of interference. Optical gratings are widely used in various applications, including spectroscopy, wavelength analysis, and optical communication. The diffraction pattern created by the grating allows for the separation and analysis of different wavelengths of light, making it a valuable tool in optics and photonics. The spacing between the slits or rulings determines the characteristics of the diffraction pattern, and optical gratings are designed to achieve specific optical effects based on their geometry.

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