OptiGrate offers VBGs with the widest range of specifications in the world, reaching the diffraction efficiencies greater than 99.9%, narrowest linewidths, largest dimensions, lowest absorptions, and other world record parameters. OptiGrate's full range of products include transmitting (TBG), reflecting (RBG) and chirped (CBG) volume Bragg gratings. OptiGrate’s vertical integration of VBG manufacturing and their unique ability to optimize and develop photo-thermo-refractive (PTR) glass and VBG characteristics, have allowed them to become a reliable supplier of VBG components for many industrial manufacturers and government contractors around the globe.