On capacity of optical channels with coherent detection

  title={On capacity of optical channels with coherent detection},
  author={Hye Won Chung and Saikat Guha and Lizhong Zheng},
  journal={2011 49th Annual Allerton Conference on Communication, Control, and Computing (Allerton)},
Optical channel with direct detections, also known as Poisson channel, is well studied. With direction detections, only the intensity of the optical signal is measured and used as the carrier of information. In coherent detection, the phase of optical signal is also utilized. Constrained by optical devices, it is hard to directly measure this phase. However, it is possible to mix the input signal with a local reference signal to create output that is phase dependent. Generating such local… CONTINUE READING

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