  The Nancy Grace Roman Space Telescope Coronagraph Instrument will be the
first large scale coronagraphmission with active wavefront control to be
operated in space and will demonstrate technologies essential tofuture missions
to image Earth-like planets. Consisting of multiple coronagraph modes, the
coronagraph isexpected to characterize and image exoplanets at 1E-8 or better
contrast levels. An object-oriented physicaloptics modeling tool called POPPY
provides flexible and efficient simulations of high-contrast point
spreadfunctions (PSFs). As such, three coronagraph modes have been modeled in
POPPY. In this paper, we presentthe recent testing results of the models and
provide quantitative comparisons between results from POPPY andexisting tools
such as PROPER/FALCO. These comparisons include the computation times required
for PSFcalculations. In addition, we discuss the future implementation of the
POPPY models for the POPPY front-endpackage WebbPSF, a widely used simulation
tool for JWST PSFs.
