The diffraction effects induced by a thick holographic grating on the propagation of a finite Gaussian beam are theoretically analyzed by means of the coupled-wave theory and the beam propagation method. Distortion of the transmitted and diffracted beams is simulated as a function of the grating parameters. Theoretical results are verified by experimentation realized by use of LiNbO<sub>3</sub> volume gratings read out by a 1550-nm Gaussian beam, typical of optical fiber communications. This analysis can be implemented as a useful tool to aid with the design of volume grating-based devices employed in optical communications.
© 2004 Optical Society of America
(050.1950) Diffraction and gratings : Diffraction gratings
(050.1970) Diffraction and gratings : Diffractive optics
(060.4510) Fiber optics and optical communications : Optical communications
(090.2890) Holography : Holographic optical elements
(090.7330) Holography : Volume gratings
Pierpaolo Boffi, Johann Osmond, Davide Piccinin, Maria Chiara Ubaldi, and Mario Martinelli, "Diffraction of Optical Communication Gaussian Beams by Volume Gratings: Comparison of Simulations and Experimental Results," Appl. Opt. 43, 3854-3865 (2004)