IEEE Photonics Journal (Jan 2017)

Proactive and Nondisruptive Channel Probing for Wavelength Switching in Optical Transmission

  • Weiyang Mo,
  • Mariya Bhopalwala,
  • Houman Rastegarfar,
  • Daniel C. Kilper

DOI
https://doi.org/10.1109/JPHOT.2017.2772242
Journal volume & issue
Vol. 9, no. 6
pp. 1 – 7

Abstract

Read online

Proactive and nondisruptive channel probing is investigated for the measurement of channel power, amplifier channel gain, and optical signal-to-noise ratio (OSNR) without disrupting established wavelength-division multiplexed channels. Using a nondisruptive probe signal over a three-span link, wavelength switching-induced power excursions are predicted to be within ±0.2 dB, and OSNR as high as 20 dB is accurately measured with a maximum of 0.5 dB error.

Keywords