Optical signal-to-noise ratio measurement by optical homodyne tomography.
An all-fiber optical homodyne tomography setup is introduced that measures the optical signal-to-noise ratio through reconstruction of the photon statistics. The scheme described has been conceived for applications to optical communications. In particular, the signal-to-noise ratio has been evaluated at lambda= 1.55 microm as a function of the received power. From the experimental data, in the case of optically amplified signals, the amplifier noise figure can be estimated.
Martelli
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CoreCom, Milano, Italy. martelli@corecom.it
Pietralunga
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Ranzani
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Siano
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Martinelli
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