Hi, I am using Physical Optics Propagation and try to compute the coupling into a monomode fiber.
Should I use “Gaussian Waist” as fiber type? I think “Top Hat” is for multimode, right?
And what is “Waist X-Y”, is it the physical diameter onf the fiber core, or the Mode Field Diameter (MFD) of the fiber?
Thanks
Julien D.
+4Hi Julien,
Waist X and Waist Y are each semidiameters. Each should be ½ of the mode field full diameter. That will describe the single mode of the fiber as a Gaussian with 1/e^2 intensity at the waist edges. Optimal coupling will occur when the beam profile presented to the fiber matches this mode.
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