Simultaneous multi-channel OSNR monitoring with a wavelength selective switch.

@article{Schrder2010SimultaneousMO,
  title={Simultaneous multi-channel OSNR monitoring with a wavelength selective switch.},
  author={J. Schr{\"o}der and Owen Brasier and Trung D. Vo and Micha{\"e}l A F Roelens and Steve Frisken and Benjamin J. Eggleton},
  journal={Optics express},
  year={2010},
  volume={18 21},
  pages={22299-304}
}
We show the first simultaneous OSNR monitoring of two 40 Gb/s OOK and DPSK channels, using only a wavelength selective switch and two slow photodetectors. Our approach is modulation format and bit-rate independent and can easily be included in existing reconfigurable networks. 

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