- #1
EmilyRuck
- 136
- 6
In a step-index optical fiber, considering Bessel functions of order ##\nu = 0## and no ##\phi## dependence, it is possible to obtain two separate sets of components, which generate respectively TE and TM modes. In the former case, only ##E_{\phi}##, ##H_r##, ##H_z## are involved; in the latter, only ##H_{\phi}##, ##E_r##, ##E_z##.
The exact modes in optical fibers are: TE, TM, EH, HE. Also, some approximated modes can be identified, known as LP: each of them may be regarded as the composition of two or more exact modes.
This gives me some confusion: are the exact modes able to propagate alone, or not? Is a single TE mode available for propagation in a step index fiber? A single HE11 mode?
And, if not, how do they propagate, then?
Thank you anyway
The exact modes in optical fibers are: TE, TM, EH, HE. Also, some approximated modes can be identified, known as LP: each of them may be regarded as the composition of two or more exact modes.
This gives me some confusion: are the exact modes able to propagate alone, or not? Is a single TE mode available for propagation in a step index fiber? A single HE11 mode?
And, if not, how do they propagate, then?
Thank you anyway