@article{Mudhafer. H. Ali_Mohammed A. Saleh_Ali H. Abdulhadi_2019, title={Characteristics of Brillouin Fiber Laser Under Two Different Techniques}, volume={11}, url={https://journal.mauc.edu.iq/index.php/JMAUC/article/view/10}, abstractNote={<p>The effect of recycling transmitted Brillouin power (RTBP) ratio on the threshold of the single wavelength Brillouin fiber laser (SWBFL) utilizing a recycling technique (R-Technique) is investigated. Different single mode fiber (SMF) lengths are used as a gain medium for the proposed laser. The RTBP ratio is increased from 20 % to 100 % a steps of 20 %&nbsp; and compared within the conventional technique (C-Technique) for each gain medium length. The laser threshold within R-Technique is enhanced by 48.4 % for gain medium length of 5 km and by 28.29 % for gain medium length of 30 km as compared within the C-Technique. This reduction in the threshold ratio is attributed to the fact that at long SMF (&gt;10 km) the effective gain medium length tends to be approximately constant. &nbsp;</p&gt;}, number={1}, journal={Journal of Madenat Alelem University College}, author={Mudhafer. H. Ali and Mohammed A. Saleh and Ali H. Abdulhadi}, year={2019}, month={Jan.}, pages={66 - 74} }