DTG-LBL-830_1550

DTG-LBL-830 and DTG-LBL-1550 are Draw Tower Gratings written in Low Bend Loss fiber.

Draw Tower Gratings (DTGRs) are produced with a process that combines the drawing of the optical fiber with the writing of the grating. This process of simultaneously drawing the fiber and writing the grating results in spliceless, high strength FBG chains. The fiber coating is applied directly after the grating inscription. As such the commonly used stripping and recoating process of standard FBGs is not necessary and the pristine fiber strength is maintained during the DTGR manufacturing process.