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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. http://resolver.caltech.edu/CaltechAUTHORS:SCHUol84

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Abstract

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.


Item Type:Article
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.
Record Number:CaltechAUTHORS:SCHUol84
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:SCHUol84
Alternative URL:http://www.opticsinfobase.org/abstract.cfm?URI=ol-9-5-189
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3068
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:12 May 2006
Last Modified:26 Dec 2012 08:52

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