Bragg diffraction of a read beam is studied theoretically when the refractive-index grating is placed inside a Fabry–Perot cavity. Diffraction efficiency, angular selectivity, and signal-to-noise ratio are largely enhanced compared with those for the bare Bragg grating, which may permit the use of low-efficiency or short-length materials as well. The results are much better for an asymmetric cavity operated in reflection than for a symmetric cavity in transmission.
© 1999 Optical Society of America
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.2230) Diffraction and gratings : Fabry-Perot
(050.7330) Diffraction and gratings : Volume gratings
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(210.0210) Optical data storage : Optical data storage
L. Menez, I. Zaquine, A. Maruani, and R. Frey, "Intracavity Bragg grating," J. Opt. Soc. Am. B 16, 1849-1855 (1999)