A class of broadband, linear acousto-optic filters whose frequency response can be programmed or adapted directly in the frequency domain is described. A practical, compact architecture for these broadband linear filters is presented. Experimental measurements of the dynamic range and filter response functions are presented and compared with theory. Applications for interference excision, wideband recording, wideband digitizing, fast frequency synthesis, and fast tracking superhet receivers are outlined.
Jerry L. Erickson,
"Linear Acousto-Optic Filters For Programmable And Adaptive Filtering", Proc. SPIE 0341, Real-Time Signal Processing V, (28 December 1982); doi: 10.1117/12.933711; https://doi.org/10.1117/12.933711