M. Gruber, E. ElJoudi, J. Jahns, S. Sinzinger, "Practical realization of massively parallel fiber-free-space optical interconnects," Appl. Opt. 40 (2001) 2902-2908

J. Jahns, E. El Joudi, D. Hagedorn, S. Kinne, "Talbot interferometer as a time filter" Optik 112 (2001) 295-298.

M. Gruber, "Phase quantization of a grating without altering the diffraction pattern" Opt. Lett. 26 (2001) 1122-1124

M. Gruber, D. Hagedorn, W. Eckert, "Precise and simple optical alignment method for double-sided lithography" Appl. Opt. 40 (2001) 5052-5055

M. Gruber, "Diffractive optical elements as raster-image generators" Appl. Opt. 40 (2001) 5830-5839.