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Noise in homodyne detection

Schumaker, Bonny L. (1984) Noise in homodyne detection. Optics Letters, 9 (5). pp. 189-191. ISSN 0146-9592.

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A simple but rigorous analysis of the important sources of noise in homodyne detection is presented. Output noise and signal-to-noise ratios are compared for direct detection, conventional (one-port) homodyning, and two-port homodyning, in which one monitors both output ports of a 50-50 beam splitter. It is shown that two-port homodyning is insensitive to local-oscillator quadrature-phase noise and hence provides (1) a means of detecting reduced quadrature-phase fluctuations (squeezing) that is perhaps more practical than one-port homodyning and (2) an output signal-to-noise ratio that can be a modest to significant improvement over that of one-port homodyning and direct detection.

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Additional Information:© Copyright 1984 Optical Society of America Received October 11, 1983; accepted February 22, 1984 This research was supported in part by National Science Foundation Grant ASTS2-14126.
Issue or Number:5
Record Number:CaltechAUTHORS:SCHUol84
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3068
Deposited By: Archive Administrator
Deposited On:12 May 2006
Last Modified:02 Oct 2019 22:59

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