I am using COMSOL to analyze the OAM modes but i can't solve the problem of plotting waveguide dispersion using neff . can you help me please?

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Şükrü Aktaş

Değişken olan lamda dalga boyudur. Işık hızı sabit neff'de lamdaya göre değişir.

Gebeyehu Dirbeba

Şükrü Aktaş I will give an appreciation for your response, but can you share using English sorry to but did not understand.

thank you I advance!

The variable is lamda wavelength. The speed is constant, in neff it changes according to the wavelength.

Şükrü Aktaş that's correct but the graph is not smooth when I plot it rather it looks like oscillatory graph.

Zaten grafik salınımlı dalga kılavuzunu verecek. Lamda ve neff 'e bağlı olarak değişken sonuç verir. (differansiyel denklemler)

Şükrü Aktaş As my understanding the graph would be slop than oscillating graph.

Grafiğin eğimi nasıl bir dalga kılavuzu olduğunu belirtir.