Experimental Optimization in Terms of Power Stability and Output Power of Highly Erbium-Doped Fiber Lasers with Single and Hybrid Cavities

Abstract

In this article, the output power stability of several different highly erbiumdoped fiber ring lasers, as a function of the laser parameters, is experimentally investigated. The study is focused on the optimization of several key parameters (erbium-doped fiber length, pump power, and different laser configurations) without changing the basic scheme. The results obtained show that the laser configuration plays an important role in achieving stable multi-wavelength lasing at room temperature in the erbium-doped fiber ring lasers. For an optimized configuration, these power fluctuations are lower than 0.08 dB, showing a notable improvement compared with previously presented work where the output power variations were about 0.2 dB. These lasers have the advantage of a simple all-fiber configuration, low cost, high stability, and operability at room temperature.

Multi-Wavelength Fiber Lasers

“…A systematically effort to study these causes has been carried out. Based on previous experience these studies have been focused on optimization of some the following parameters: pump power [19], doped fiber length and ions concentration [26], output coupling ratio [7], total cavity length [26], spectral hole-burning effect [27] or the cavity losses [28]. However, polarization control seems not very important for the multimode regime [7].…”

“…Thus, several EDFL hybrid cavity configurations, combining both EDFR and short cavity fiber laser, have been designed and experimentally analyzed [18], [19]. Figure 2 shows the experimental setup of a short-cavity fiber laser.…”

Nonlinear pulse reshaping in a typically designed silicon-on-insulator waveguide and its application to generate a high repetition rate pulse train

“…The power instability can be defined as the maximum output power variation on the dBm scale [30]. As mentioned earlier that almost 20% change in input power does not greatly impact pulse reshaping towards PP generation and TP generation, the following figure (figures 10(a) and (b)) depicts that the output power (P out ) in dBm does not vary significantly when the pulse reaches the optimum length.…”

Gamma Radiation-Induced Effects over an Optical Fiber Laser: Towards New Sensing Applications

“…This work focused on analyzing the ionizing radiation effect (in current case gamma-ray) on different types of EDFs when they were employed into an FRC configuration. A flat region of the erbium gain profile was selected for the FBG´s central wavelength emission (1550.7 nm), to minimize undesired output power level fluctuations [29,30]. Hence, a thorough study was carried out by using the IEDF type M12 and not the I25.…”