We have previously discussed the transmission and coupling losses of a Gaussian beam in a folded waveguide structure made of two hollow square waveguides placed symmetrically above a spherical mirror with a nonzero on-axis angle between. Here we investigate the additional loss due to the misalignment of the mirror (axial displacement and/or angular tilt). The theoretical results are in good agreement with experiment and provide alignment tolerances for folded waveguide design.
© 1990 Optical Society of America
Original Manuscript: January 23, 1989
Published: February 20, 1990
J. Banerji, A. R. Davies, R. W. J. Devereux, C. A. Hill, and R. M. Jenkins, "Effects of curved mirror misalignment in a folded waveguide," Appl. Opt. 29, 777-785 (1990)