A single-mode step index fiber with a core refractive index of 1.49 has a critical bending...

 

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A single-mode step index fiber with a core refractive index of 1.49 has a critical bending radius of 10.4 mm when illuminated with light at a wavelength of 1.30 um. If the cutoff wavelength for the fiber is 1.15 pum calculate its relative refrac- tive index difference. A single-mode step index fiber with a core refractive index of 1.49 has a critical bending radius of 10.4 mm when illuminated with light at a wavelength of 1.30 um. If the cutoff wavelength for the fiber is 1.15 pum calculate its relative refrac- tive index difference.