A. K. Abass, M. H. Al-Mansoori, M. Z. Jamaludin, F. Abdullah, T. F. Al-Mashhadani, M. H. Ali
الملخص العربي
We demonstrate a simple design to enhance the performance of a multiwavelength Brillouin–Raman fiber laser by capturing the residual Raman pump power (RPP) from the laser cavity using a wave-
length-selective coupler. The performance parameters of the laser system are investigated and compared with the conventional design under the same input design parameters. Both laser systems at a RPP of 375 mW can generate up to 33 Stokes lines with an equal channel spacing of 0.08 nm; however, the tunability of the laser without injection of residual RPP is 25% higher than the conventional laser structure.In addition, for a laser system without residual RPP injection, increasing the RPP improves the laser
performance and generates up to 42 Stokes lines with a tunability of 24.5 nm, from 1570 to 1594.5 nm, at 475 mW. In contrast, the laser system with a residual RPP has the worst performance as the pump power is increased, and generates only nine Stokes lines with a tuning range of 5 nm at the same RPP of475 mW.
د. مظفر الظفيري | Dr. Mudhafar Al-Dhufairi | 10455