Physics – Optics
Scientific paper
Jan 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3219...84a&link_type=abstract
Proc. SPIE Vol. 3219, p. 84-92, Optics in Atmospheric Propagation and Adaptive Systems II, Anton Kohnle; Adam D. Devir; Eds.
Physics
Optics
Scientific paper
In this paper, a theoretical comparison is made of the mean carrier-to-noise ratio (CNR) for a coherent (heterodyne detection) equal gain (EG) optical array receiver system with that predicted by a conventional single-aperture monolithic coherent detector system. Our analysis shows that the mean CNR for an EG array receiver system improves significantly over that of a single aperture system. Experimental data taken from a recent outdoor experiment over a range up to 1 km between target and transceiver are also presented and compared with the theory for a particular eight-element EG system developed at the University of Central Florida. Optical signals received by the EG receiver array are launched into eight single mode optical fibers. Phase compensation between the individual receivers is accomplished by wrapping the fiber around PZT cylinders that are controlled by phase compensating electronics.
Andrews Larry C.
Gagge Chie L.
Harvey James E.
Kelly Deborah E.
Luvera Giovanni
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