(b) Consider an optical transmission link that consists of a 10 km long step-index fiber with...

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(b) Consider an optical transmission link that consists of a 10 km long step-index fiber with core refractive index of 1.75 and cladding refractive index of 1.74. The core radius of the optic fiber is 4.05 um. When a light beam at 1.55 µm is launched into the fiber link, it is found that multiple electromagnetic (EM) modes are generated. (1) (ii) Determine the number of modes that can be generated in the optic fiber. Find the delay difference between the slowest and fastest EM modes at the fiber end. (iii) If one wants to reduce the delay difference between the slowest and fastest modes at the fiber end, suggest a method to achieve this. (10 Marks) (b) Consider an optical transmission link that consists of a 10 km long step-index fiber with core refractive index of 1.75 and cladding refractive index of 1.74. The core radius of the optic fiber is 4.05 um. When a light beam at 1.55 µm is launched into the fiber link, it is found that multiple electromagnetic (EM) modes are generated. (1) (ii) Determine the number of modes that can be generated in the optic fiber. Find the delay difference between the slowest and fastest EM modes at the fiber end. (iii) If one wants to reduce the delay difference between the slowest and fastest modes at the fiber end, suggest a method to achieve this. (10 Marks) (b) Consider an optical transmission link that consists of a 10 km long step-index fiber with core refractive index of 1.75 and cladding refractive index of 1.74. The core radius of the optic fiber is 4.05 um. When a light beam at 1.55 µm is launched into the fiber link, it is found that multiple electromagnetic (EM) modes are generated. (1) (ii) Determine the number of modes that can be generated in the optic fiber. Find the delay difference between the slowest and fastest EM modes at the fiber end. (iii) If one wants to reduce the delay difference between the slowest and fastest modes at the fiber end, suggest a method to achieve this. (10 Marks)

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SOLUTION b Consider an optical transmission link that consists of a 10 km long stepindex fiber with core refractive index of 175 and cladding refractive index of 174 The core radius of the optic fiber ... View the full answer