Ring Cavity Erbium-Doped Fiber for Refractive Index Measurements

In this study, an interrogation system based on an erbium-doped fiber ring cavity for refractive index measurements is presented and experimentally demonstrated. This cavity ring includes a 1 x 3 coupler wherein one of the fiber output ports is used to increase the optical power of the system by means of an FBG used as a reflector. The other two output ports are used as a refractive index sensing head and reference port, respectively. An experimental demonstration of this proposed sensor system for the measurement of a distinct refractive index is presented.

Automated summary

In this study, an erbium-doped fiber ring cavity-based interrogation system for refractive index measurements is proposed and experimentally demonstrated. The system utilizes an FBG as a reflector to increase the optical power and includes two output ports for refractive index measurement.