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Optical fiber simulation

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While I simulating my anti-resonant optical fiber design for OAM modes, I get some positive and some negative values of refractive index imaginary part. As I know, I must get negative values to compute confinement loss. I can't understand where is the problem. Please help me with your valuable opinion.


0 Replies Last Post 10 nov. 2023, 23:55 UTC−5
COMSOL Moderator

Hello Rosni Sayed

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