The intensity patterns for the LP modes, calculated from eq(1) and (2).
The LP modes are observed as intensity patterns in the transverse plane.|
The intensity functions in the core and cladding for any LP mode can be expressed as following equations:
I_lm = I_0 J_l^2 (ur/a) sin^2 (l phi) r<=a
I_lm = I_0 (J_l (u)/ K_l (w))^2 K_l^2 (wr/a) sin^2 (l phi) r>=a