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22 May 2015 Photonic RF-IF wideband down conversion using optical injection locking
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We describe the implementation of a self-heterodyne, tunable down converting RF-IF photonic link as a key component of a wideband microwave signal search and intercept system covering S to Ka bands. The presented architecture uses photomixing of two distributed feedback lasers injection locked to a master external cavity laser, allowing low phase to amplitude noise conversion and improved sensitivity. Coherent detection of the intermediate frequency allows unambiguous recovery of full time-domain information. The practical implementation of a packaged prototype system will be discussed, with emphasis on the system stabilization strategy and performance requirements.
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James R. Adleman, Chunyan L. Lin, Shai B. Jester, B. Melvin Pascoguin, Douglass C. Evans, and Everett W. Jacobs "Photonic RF-IF wideband down conversion using optical injection locking", Proc. SPIE 9467, Micro- and Nanotechnology Sensors, Systems, and Applications VII, 946721 (22 May 2015);

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