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fiber optic
coupling in a misaligned SM fiber optic


afocal system for coupling an elliptical beam 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
lam
fi1
fi2
wf
dz
T
OutputValueUnit
Cto be calculated
afocal system for coupling an elliptical beam 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 lam : wavelength wf : mode radius of the fiber optic fi1 : effective focal length of the first lens fi2 : effective focal length of the second lens dz : fiber optic defocus ( focus is supposed to be achieved when fiber optic entrance and waist of the refracted beam are both merging with the back focal point of the second lens ) 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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