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← ScienceWhich outcome occurs when cladding refractive index increases on waveguide?
A)Decreased bit-error rate
B)Increased mode confinement
C)Increased fiber attenuation✓
D)Decreased material dispersion
💡 Explanation
Increased cladding refractive index causes decreased refractive index difference; therefore, reduced total internal reflection leads to increased fiber attenuation because light more easily escapes rather than remains confined, and mode confinement decreases rather than increases.
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