Virginia TechIndebetouw, Guy J.Case, S. K.2014-04-042014-04-041981-10G. Indebetouw and S. K. Case, "Fabry-Perot filters used for optical preprocessing," Appl. Opt. 20, 1715-1718 (1981). doi: 10.1364/ao.20.0017150003-6935http://hdl.handle.net/10919/46899A Fabry-Perot etalon placed in the object plane of a coherent optical processing system can be used as a variable bandpass preprocessing filter. Use of this filter leads to improved correlation signals in a matched spatial filter system. Experimental results are shown and compared with results obtained by two other preprocessing methods.en-USIn CopyrightArticle - Refereedhttp://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-20-9-1715https://doi.org/10.1364/ao.20.001715