Abstract
Two types of noise are discussed that may become important when light frequencies are used for communication purposes. At such high frequencies a quantum of energy is not negligible compared to the total transmitted energies (low number of quanta!). The fluctuations caused by the nonzero size of a quantum of energy will predominate over thermal noise, and the usual amplifier noise encountered at microwave (and lower) frequencies. The two types of processes producing quantum noise that we intend to discuss are shown in Pig. 1. They are:
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1.
The radiative attenuation noise introduced when a signal, phase-and amplitude-control1ed at the high-power transmitter end, is highly attenuated through the inverse square law radiative attenuation. Such a process would take place in the use of optical frequencies for energy transmission over large distances.
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2.
The noise introduced in linear amplification.
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The
objective of this paper is to show how these forms of noise can be analyzed using simple statistics and classical electromagnetic theory with the aid of only a few quantum-theoretical results that have a simple physical meaning.
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References
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© 1963 N.V. Uitgeversmaatschappij Centrex
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Haus, H.A., Mullen, J.A. (1963). Photon noise. In: Microwaves. Palgrave, London. https://doi.org/10.1007/978-1-349-00447-8_86
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DOI: https://doi.org/10.1007/978-1-349-00447-8_86
Publisher Name: Palgrave, London
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