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.

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@article{Martelli2006OpticalSR, title={Optical signal-to-noise ratio measurement by optical homodyne tomography.}, author={Paolo Martelli and Silvia Maria Pietralunga and Leonardo Ranzani and Rocco Siano and Marcelo Martinelli}, journal={Optics letters}, year={2006}, volume={31 3}, pages={302-4} }