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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 6 — Mar. 15, 2014
  • pp: 1605–1608

Demonstration of in-service wavelength division multiplexing optical-signal-to-noise ratio performance monitoring and operating guidelines for coherent data channels with different modulation formats and various baud rates

Mohammad Reza Chitgarha, Salman Khaleghi, Wajih Daab, Ahmed Almaiman, Morteza Ziyadi, Amirhossein Mohajerin-Ariaei, Devora Rogawski, Moshe Tur, Joseph D. Touch, Vijay Vusirikala, Wendy Zhao, and Alan E. Willner  »View Author Affiliations


Optics Letters, Vol. 39, Issue 6, pp. 1605-1608 (2014)
http://dx.doi.org/10.1364/OL.39.001605


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Abstract

We demonstrated a delay-line interferometer (DLI)-based, optical-signal-to-noise ratio (OSNR) monitoring scheme of 100Gbit/s polarization multiplexed quadrature-phase-shift-keying (PM-QPSK) four-channel WDM at 50-GHz International Telecommunication Union (ITU) grid with <0.5dB error for signals with up to 26 dB of actual OSNR. We also demonstrated data format transparency and baud rate tunability of the OSNR monitor by measuring the OSNR for a 200Gbit/s PM-16-QAM (25-Gbaud) signal and a 200Gbit/s PM-QPSK (50-Gbaud) signal. We also explored and studied different monitor parameters, including the shape of the filter spectrum, the bandwidth of the filter, DLI delay, and DLI phase-detuning to determine the design guidelines for a desired level of accuracy for the OSNR monitor in an optical network.

© 2014 Optical Society of America

OCIS Codes
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(190.4223) Nonlinear optics : Nonlinear wave mixing

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: February 7, 2014
Manuscript Accepted: February 7, 2014
Published: March 12, 2014

Citation
Mohammad Reza Chitgarha, Salman Khaleghi, Wajih Daab, Ahmed Almaiman, Morteza Ziyadi, Amirhossein Mohajerin-Ariaei, Devora Rogawski, Moshe Tur, Joseph D. Touch, Vijay Vusirikala, Wendy Zhao, and Alan E. Willner, "Demonstration of in-service wavelength division multiplexing optical-signal-to-noise ratio performance monitoring and operating guidelines for coherent data channels with different modulation formats and various baud rates," Opt. Lett. 39, 1605-1608 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-6-1605

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