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Comments on "Optical amplifier noise figure reduction for optical single-sideband signals"

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1 Author(s)
Summerfield, M.A. ; Dept. of Electr. & Electron. Eng., Melbourne Univ., Parkville, Vic., Australia

In a recent paper (see Proc. Inst. Radio Eng., vol.32, p.419, 1944). it was demonstrated that a noise figure below the so-called "quantum limit" is possible using single-sideband (SSB) modulation. In this comment we discuss the interpretation of this result and its implications for optical communications systems.

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Lightwave Technology, Journal of  (Volume:18 ,  Issue: 9 )