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fiber optic
coupling in a misaligned SM fiber optic


elliptical beam focused by a lens into a longitudinally shifted single mode fiber optic


Caution
Fill in all input cells.
Choose all parameters unit.
distances are algebric.
Positive direction is according the horizontal arrow in the bottom right of the scheme.

InputValueunit
wh
wv
x
lam
fi
wf
dz
T
OutputValueUnit
Cto be calculated
elliptical beam focused by a lens into a longitudinally shifted single mode fiber optic
wh : waist width of the incident elliptical beam in the horizontal plane wv : waist width of the incident elliptical beam in the vertical plane x : distance from the lens to the waist of the incident beam lam : wavelength fi : back focal length of the lens wf : mode radius of the fiber optic dz : fiber optic defocus ( focus is supposed to be achieved when fiber optic entrance and "vertical" waist of the refracted beam are merging ) T : transmission coefficient at the entrance of the fiber optic C : coupling ratio

Note
This calculation page can not detect all unrealistic inputs.



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