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  • M. R. Chitgarha, Salman Khaleghi, +8 authors A. E. Willner
  • Engineering
  • Optical Fiber Communication Conference and…
  • 2013 (First Publication: 17 March 2013)
  • We demonstrate an optical-signal-to-noise-ratio (OSNR) monitoring scheme of 200-Gbit/s PM-16QAM and 100-Gbit/s QPSK signals using Mach-Zehnder delay-line-interferometer with <;0.5 dB error forExpand
  • M. R. Chitgarha, Salman Khaleghi, +9 authors Alan E. Willner
  • Physics, Medicine
  • Optics letters
  • 2014 (First Publication: 15 March 2014)
  • We demonstrated a delay-line interferometer (DLI)-based, optical-signal-to-noise ratio (OSNR) monitoring scheme of 100  Gbit/s polarization multiplexed quadrature-phase-shift-keying (PM-QPSK)Expand
  • Ahmed Almaiman, M. R. Chitgarha, +14 authors A. E. Willner
  • Engineering
  • OFC
  • 2014 (First Publication: 9 March 2014)
  • We experimentally demonstrate the robustness of an MZI-based OSNR monitor under reconfigurable network and transmitter drift. The monitor calibration factors for 25 Gbaud PM-QPSK signal are storedExpand
  • Ahmed Almaiman, M. R. Chitgarha, +14 authors Alan E. Willner
  • Physics, Medicine
  • Optics letters
  • 2015 (First Publication: 1 May 2015)
  • We experimentally studied the performance of a delay-line interferometer-based optical signal-to-noise ratio (OSNR) monitor that is pre-calibrated in optimal conditions for 25-Gbaud pol-muxedExpand