Jabur Al-Azawi, R. . (2009). A Solution of Nonlinear Rate Equations of Directly Modulated Semiconductor Laser to Chose Optimum Frequency Modulation. Journal of Engineering and Sustainable Development, 13(3), 30-37. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1524