Abstract
New optical fiber components and add/drop devices implementation is gaining more and more importance with the growing development of the Wavelength Division Multiplexing systems. In the present paper, we take a closer look at the design. of long period fiber gratings (LPFG) which present several advantages compared to similar components.. In. fact, the LPFG has stronger wavelength stability when opposed to temperature variations and a better resistance against mechanical strength., These qualities offer them more importance in the industry. We use an electric arc to change the fiber characteristics and to create a fringe which presents a very thin section of the fiber that has a different refractive index. We use several kinds of optical fibers like the Erbium Doped Fiber (EDF) for optical amplifier applications and Germanium Doped Fiber (GeDF) for the Wavelength Division Multiplexing applications. The gap between two neighbor fringes for the LPFG varies in the range of 400 to 1200um. We use a computer based setup which allow us the control of the arc intensity and the discharge time. By adjusting these parameters and the inter-fringe step, we can produce various components.