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diffraction grating Definition

diffraction grating

noun

Optics a plate of glass or polished metal ruled with a series of very close, equidistant, parallel lines, used to produce a spectrum by the diffraction of reflected or transmitted light

diffraction grating Telecom Definition

An optical device comprising a set of fine parallel slits or grooves etched onto a material in order to product interference patterns that separate components of a spectrum of incoming light. The fundamental principle is that different wavelengths diffract to different extents, so they can be separated much as a prism separates a composite polychromatic incident light beam into its constituent wavelengths of light. Human beings see this as the separation of white light into a rainbow of colored light. There are two types of diffraction gratings:

diffraction grating Usage Examples

Converse of object

  • use: The new cavity configuration allowed tuning of the laser continuously over 25 nm of the erbium gain bandwidth by using a bulk diffraction grating.
  • make: It contains a replica diffraction grating made from a high quality high efficiency blazed master.

Adjective modifier

  • tunable: But the tunable diffraction grating could raise it by about 100 percent.
  • distorted: We design distorted diffraction gratings that simulate the effects of long propagation distances in a short instrument.

Noun used with modifier

transmission: The Star Analyzer 100 is a high efficiency 100 lines/mm transmission diffraction grating, blazed in the first order.