![]() (i) Diacuss the signal distortion in single mode fibers If the core radius is 25 pm, find the numerical apertureĩ. A step index fiber has a normalized frequency V = 26.6 at 1300 nm wavelength. What is the fundamental parameter of a single mode fiber?Ĩ. ![]() What range of refractive index diffrences does this correspond to? (for wavelength = 1300 nm)ħ. ![]() Commonly available single mode fibers have beat lengths in the range 10 cm < Lp <2 m. Define numerical aperture of a step index fiberĥ. Calculate the numerical aperture at the axis and at a point 20 micro meter from the axisģ. Consider a parabolic index waveguide with n1 =1.75 ,n2 = 1.677 and core radius 25 micro meter. What is the radius of the largest circle on the water surface through which the light can emerge?Ģ. A point sorce of ligth is 12 cm below the surface of a large body of water (n = 1.33). Anna University Regulation 2017 ECE EC8751 OC Important Questions with Answer Key and ECE 7th Sem EC8751 OPTICAL COMMUNICATION Engineering Answer Key is listed down for students to make perfect utilization and score maximum marks with our study materials.ġ. ![]()
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