Raman Dhiman, and Dr. Shelly Garg. “Comparison of Bit Rate Between Single-Mode and Multimode Optical Fiber in Case of Step Index and Graded Index at Varied Distances”. International Journal for Research Publication and Seminar, vol. 7, no. 8, Dec. 2016, pp. 20-26, https://jrps.shodhsagar.com/index.php/j/article/view/957.