The output characteristics of the erbium-doped fiber Bragg grating ring laser

Abstract

We present the study of the output characteristics of a distributed Bragg grating fiber ring laser (DBGFL) with different coupling configuration with the fiber Bragg grating (FBG). The fiber ring laser was pumped by a 980 nm laser diode with pig tail fiber connection with a 980/1550 WDM, and the resonator is contained in a fiber Bragg grating loop. Two coupling configuration of the FBG have been used to study the effect to the output characteristics of the fiber ring laser. It shows about the same output efficiency between the fiber ring laser with only reflection coupling and with reflection /transmission coupling. In addition, a numerical model of calculating the multiple reflection/transmission feedback coupling of the FBG has been proposed, and explains reasonably the experimental results.