Rsoft Tutorials 2. Simulating a Waveguide using BeamPROP and Mode Profile

BeamPROP is a simulator found in the Rsoft package. Here, we will use BeamPROP to calculate the field distributions of our tapered waveguides. Other methods built withing Rsoft CAD are will also be explored.

 

Tapered Waveguide

The tapered waveguide that we are simulating is found below. We will use the BeamPROP tool to simulate the field distributions in the waveguide. We will also use the mode calculation tool to simulate the mode profile at each end of the waveguide.

BeamPROP Simulation Results

rsoft3.3

Rsoft CAD

rsoft3.4

Mode Profile Simulation

The mode simulation tool is found on the sidebar:

rsoft3.5

Before choosing the parameters of the Mode Simulator, let’s first take a look at the coordinates of the beginning and end of the waveguide. This dialog is found by right-clicking on the component. The window shows that the starting point along the z axis is 1 and the ending point is 43 (the units are actually micrometers, by the way). We will choose locations along the waveguide close to the ends of the waveguide at z equals 1.5 and 42.5.

rsoft3.6

Parameter selection window:

rsoft3.7

Results at z = 1.5:

rsoft3.72

Results at z = 42.5:

rsoft3.71

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