Comment on "Interferometric phase-only optical encryption system that uses a reference wave".
We explain the vulnerability of the phase-only encryption procedure suggested by Seo and Kim [Opt. Lett. 28, 304 (2003)] and clarify issues regarding its robustness and degree of security compared with those of a previously reported phase-only encryption method.
Glückstad
Jesper
J
Optics and Fluid Dynamics Department, Risø National Laboratory, DK-4000 Roskilde, Denmark. jesper.gluckstad@risoe.dk
Daria
Vincent R
VR
Rodrigo
Peter J
PJ