NEW! SC342 Digital Coherent Optical Communications

Sunday, March 21, 2010
9:00 a.m.–12:00 p.m.
Maurice O'Sullivan; Nortel, Canada
Level: Advanced Beginner (basic understanding of topic is necessary to follow course material)


Course Description

Transmission systems operating at 40 Gb/s and 100 Gb/s, including network spectral efficiencies above 1 b/s/Hz, are being installed to address the need for capacity in long haul optical networks. Coherent transmission can provide the optical performance to allow the use of these signals on a flexible meshed network of continental dimensions. CMOS electronics has enabled the digital signal processing (DSP) and error correction (FEC) necessary for practical coherent transceivers.

This course will introduce DSP-assisted digital coherent optical transmission. This includes electric field modulation, coherent detection, linear filtering and data recovery. Single and multicarrier implementations will be examined. The dependence of the performance upon the dispersion map and upon the composition of the wavelength division multiplexed (WDM) spectrum will be addressed.


Benefits and Learning Objectives

This course should enable you to:

  • Understand basic implementations of electric field modulators.
  • Understand basic implementation of coherent detectors.
  • List or describe the main linear equalization function performed by DSP.
  • Compare architectures of single and multicarrier coherent transceivers.
  • Anticipate relative performances of coherent phase modulated channels vs. dispersion map and WDM channel spectrum.

Intended Audience

This course is intended for network operators, system integrators and other interested parties seeking introductory insight into DSP assisted coherent optical transmission.


Biography

Maurice O'Sullivan has worked at Nortel for a score of years, at first in the optical cable business, developing factory-tailored metrology for optical fiber, but, in the main, in the optical transmission business developing, modeling and verifying physical layer designs and performance of Nortel's line and highest rate transmission product including OC-192, MOR, MOR+, LH1600G, eDCO and eDC40G. He continues on this path and is at present contributing to the design of Nortel's 100G coherent product. He holds a PhD in physics (high resolution spectroscopy) from the University of Toronto and is a Nortel Fellow.