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fiber optic
coupling in a SM fiber optic


optimal afocal system for coupling an elliptical beam into a single mode fiber optic


Caution
Fill in all input cells.
Choose all parameters unit.
All parameters are positive.
It is assumed that the waist of the incident beam is located in the front focal plane of the first lens as well as the waist of the refracted beam is coinciding with the fiber entrance in the back focal plane of the second lens.

InputValueunit
wh
wv
wf
L
T
OutputValueUnit
fi1to be calculated
fi2to be calculated
eto be calculated
Cto be calculated
optimal afocal system for coupling an elliptical  beam into a 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 wf : mode radius of the fiber optic L : distance between the two lenses T : transmission ratio at the entrance of the fiber optic ( depending on the reflexion at the interface between air and fiber optic ) fi1 : effective focal length of the first lens fi2 : effective focal length of the second lens e : distance between the respective waists of incident and refracted beams C : coupling ratio

Note
This calculation page can not detect all unrealistic inputs.



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