The Bidirectionally Coupled Ray Tracing study () is used to compute ray trajectories that are affected by external fields. This study solves for all degrees of freedom related to rays using a Time-Dependent Solver. All other degrees of freedom are computed using a Stationary Solver. The two solvers are repeated using a For-End For loop so that a self-consistent solution is obtained, taking the bidirectional coupling between the propagating rays and stationary fields into account.

See the Ray Tracing study step for information about the following sections: Study Settings, Results While Solving, Physics and Variables Selection, Values of Dependent Variables, Mesh Selection, and Study Extensions. See Bidirectionally Coupled Particle Tracing for information about the Iterations section.