CAMBRIDGE, Mass., Feb. 5 -- A Massachusetts Institute of Technology (MIT) device that makes the world's most precise rulers -- with "ticks" only a few hundred billionths of a meter apart -- could impact fields from the manufacture of computer chips to space physics. The Nanoruler is 10 to 1000 times faster and more precise than other methods for patterning parallel lines and spaces (known collectively as gratings) across large surfaces more than 12 inches in diameter. 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It is used as a multiple knife-edge for testing a concave mirror.Fiber Bragg GratingsA fiber Bragg grating is a type of optical filter that is inscribed or "written" into the core of an optical fiber. It consists of a periodic modulation of the refractive index along the length of...Echelle GratingsAn echelle grating is a specialized form of diffraction grating consisting of assembled glass plates of equal thickness that resemble a flight of stairs. The light enters through the largest plate at...CompaniesSpectrogon US Inc.Spectrogon manufactures and develops optical filters, thin-film coatings, and holographic diffraction gratings. The company continuously improves production techniques and craftsmanship in order to...Photonics Buyers' GuideOPCO Laboratory Inc.We, at OPCO Laboratory, are an extension of your team. With over 40 years of optical design and manufacturing experience, we provide total solutions from prototypes through production. Being...Photonics Buyers' GuideCarl Zeiss Spectroscopy GmbHCarl Zeiss Spectroscopy develops and produces optical gratings, optical modules, and spectrometer systems of highest quality, superior optical performance, robust design and fast analysis. We...Photonics Buyers' GuideExcelitas Technologies Corp.Excelitas Technologies® Corp. is a leading industrial technology manufacturer focused on delivering innovative, market-driven photonic solutions to meet the illumination, optical, optronic,...Photonics Buyers' Guide