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fiber optic
coupling in a SM fiber optic


gaussian beam focused by a lens into a 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
It is assumed that the waist of the refracted beam is located at the fiber entrance.

InputValueunit
wo
x
lam
fi
wf
T
OutputValueUnit
xito be calculated
Cto be calculated
gaussian beam focused by a lens into a single mode fiber optic
wo : waist radius of the incident gaussian beam x : distance from the lens to the waist of the incident gaussian beam lam : wavelength fi : back focal length of the lens wf : mode radius of the fiber optic T : transmission coefficient at the entrance of the fiber optic xi : distance from the lens to the waist of the refracted gaussian beam ( merging with the fiber optic entrance ) C : coupling ratio

Note
This calculation page can not detect all unrealistic inputs.



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