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FiberWork presides important workshop at OFCNFOEC 2007



40Gb/s Networks and the PMD Challenge
How much of the world installed fiber plant can support 40Gb/s DWDM upgrades? What is the market impact of PMD?

Chairman & Organizer: Sergio Barcelos, PhD
FiberWork Optical Communications

Date: Monday, March 26
Time: 8:00 a.m. - 11:00 a.m.
Local: Ballroom B

Summary: We are currently seen a major move towards 40Gb/s line interfaces, pushed by some router manufacturers. Thus, DWDM transport shall have to follow swiftly. Polarization Mode Dispersion (PMD) has been a stringent parameter for 10Gb/s and is set to be the most though challenge at 40Gb/s DWDM transmission. On the other hand, the world installed fiber base is large, with a great portion of it built during the fiber market boom period (1997-2001). New major fiber constructions are not expected again for the next few years due to the current overcapacity, at least in the long distance market sector. So, 40Gb/s DWDM transmission must tolerate PMD impairments as currently seen in the field rather than as idealized in laboratory demonstrations. However, it is clear that the extent of the world PMD problem has not yet been recognized as most PMD–impaired fiber networks are still operating at low channel rates and/or at low DWDM channel counts. Some questions then arise: What is the volume of high PMD fibers installed around the world? How much of today’s world fiber plant can support 40Gb/s transmission? What is the average PMD level of the world fiber plant? This workshop will address these questions, which shall benefit telecom operators and equipment manufacturers enormously. Presenters will show their findings in different regions of the world, then allowing deriving a better perspective of the global PMD problem. A teaser talk pointing out the motivation behind the 40Gb/s push and reviewing solutions for alleviating the PMD impairment (new modulation techniques, PMD compensation, forward error correction, selection of best installed fibers for upgrade) is also planned. Interested presenters should contact the organizer.

Workshop Results: The OFCNFOEC-2007 workshop on "40Gb/s networks and the PMD challenge" was a great success. It was divided in two parts. The first part discussed the market impact of PMD. The second part focused on surveying the PMD levels of the world fiber plant and evaluating its compliace to 40Gbs transmission. To have access to the power-point presentations, please go through the workshop program below and click on the presentation titles. The presentations will be made available from April 15th, 2007. Speakers biographies are available by clicking on the speakers names.

Workshop Program


Optical Fiber Communication Conference and Exposition (OFC) &
National Fiber Optic Engineers Conference (NFOEC)

Technical Conference: March 25-29, 2007
Exposition: March 27-29, 2007
Anaheim Convention Center, California, USA

The Optical Fiber Communication Conference & Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC) is the premier international event for both the science and business of optical communications, with a comprehensive technical program and the largest all-optical business exhibition. There's no greater value in the industry. More than 13,000 people are expected!

Oficial OFCNFOEC website: