Years of experience in making ultra-high reliability GFFs means that we apply this know-how and workmanship to all our FBG based products, for all applications.
ITF’s Gain Flattening Filters are based on the Fiber Bragg Grating technology, which is the best solution among others for long haul and ultra-long haul systems. Indeed, each filter has a unique transmission curve, so there is no linear accumulation of error in a long cascade of amplifiers. Our high-reliability components and process meet the highest standards of the industry and the rigorous demands of undersea applications.
Here’s a figure showing what might be a typical requirement for a gain flattening pattern, and how close to the theoretical requirements we are able to write the FBG spectrum with our process.