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Quantum Limited DPSK Receivers with Optical Mach-Zehnder Interferometer Demodulation

Xiupu Zhang·Guodong Zhang
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Abstract

We present an analysis of quantum-limited DPSK receivers with optical Mach-Zehnder interferometer (MZI) demodulation. It is shown for the first time that the quantum limits for DPSK/MZI receivers with single-port and balanced detections exactly differ from 3-dB in receiver sensitivity, obtained by both Poisson and Gaussian noise statistics.

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Xiupu Zhang, Guodong Zhang. 2004-10-12. Quantum Limited DPSK Receivers with Optical Mach-Zehnder Interferometer Demodulation. https://arxiv.org/abs/physics/0410077

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