Comparing result with others can be challenge, as you may not know the details of their device, such as material property, simulation settings. Please refer to
Ansys Insight: Why my simulation result is different from published paper or experiment?
Actually you can use port instead of mode expansion monitor.
you can also move the source/port/monitor a little away from the junctions between the straight waveguides and the bend.
You are navigating away from the AIS Discovery experience