Comparing Finesse simulations, analytical solutions and OSCAR   simulations of Fabry-Perot alignment signals
  This document records the results of a comparison of the interferometer simulation Finesse against an analytic (MATLAB based) calculation of the alignment sensing signals of a Fabry Perot cavity. This task was started during the commissioning workshop at the LIGO Livingston site between the 28.1. and 1.02 2013 with the aim of creating a reference example for validating numerical simulation tools. The FFT based simulation OSCAR joined the battle later. 
Stefan Ballmer, Jerome Degallaix, Andreas Freise, Paul Fulda
physics.optics astro-ph.IM