Any amount of stress occurring at the core-cladding interface would be reduced by grading the material composition.

Optoelectronics and Optical Communication 

Any amount of stress occurring at the core-cladding interface would be reduced by grading the material composition.

a) True 
b) False

Answer : - True

A problem arises with that of simple step index approach to dispersion shifting is high. The fibers produced exhibit high dopant-dependent losses at operating wavelengths. These losses are caused by induced-stress in the region of core-cladding interface. This can be reduced by grading the material composition of the fiber.