Tyco Transmits 40G Signal on Trans Pacific Cable
June 2009 Sea Technology Magazine. Tyco Telecommunications (Morristown, New Jersey) recently announced the successful demonstration of a 40 gigabit per second transmission over ultra-long haul distances. The test was conducted using dark fibers on the existing Tata Communications (Mumbai, India) TGN-Pacific submarine cable system that links Tokyo, Japan, to multiple U.S. West Coast city points of presence.

The data were carried from Toyohashi, Japan, to Los Angeles, California.

“We view this development as a significant milestone in the evolution of undersea cable transmission capability,” said Dr. Seymour Shapiro, vice president of research and development and chief technology officer of Tyco Telecommunications. “40G transmission is clearly the next standard for long-haul transmission, including undersea.”

In this field trial, a 40 gigabit per second signal was transmitted across two segments of Tata Communications’ TGN network for a total of 11,000 kilometers of undersea repeatered cable without regeneration. The path ran error-free over the entire three-day measurement period.

In a second experiment, a 40 gigabit per second data stream was looped back at the Los Angeles and Toyohashi terminals, so that the signal made four trips across the Pacific for a total transmission distance of 44,000 kilometers.

“The success of this field trial was made possible largely due to the top-notch support and cooperation by both the Tata Communications and Tyco Telecommunications teams and demonstrates that our TGN submarine cable network is capable of delivering native 40G transport,” said John Hayduk, chief technology officer of Tata Communications. “This can help us deliver another option to our customers, from both the service capability and the cost effectiveness points of view.”

“The deployment of 40G on undersea cable systems will be made possible by the confluence of 40G build-outs on terrestrial links and the availability of long-reach 40G transponders,” said William Marra, vice president and general manager of Tyco Telecommunications. “As higher bit rates become more prevalent in the terrestrial market, these services will naturally be required on undersea cables. Over the next year we expect to see 40 gigabits per second deployments starting with short ‘regional’ systems, which will be followed by transoceanic build-outs. This successful field trial illustrates how dedicated Tyco Telecommunications is to its existing customer base.” For more information, visit www.tycotelecom.com

SeaZone GeoTemporal Helps Monitor Port Development
SeaZone Solutions Ltd. (Hampshire, England) recently announced that its software is being used to monitor the impact of dredging activities taking place as part of a port development project in the U.K.

Selected by Titan Environmental Surveys (Glamorgan, Wales), SeaZone GeoTemporal has been used to manage raw data collected to form a baseline model and to analyze changes in water quality.

The software is helping the development company minimize disruption and control the environmental impact of their activities, Seazone said.

Titan was commissioned to undertake the collection of baseline monitoring data for the port development area, including wave, tide and current conditions; sediment levels; and other key water-quality parameters in relation to seasonal, tidal and nontidal contributing factors. The data were then used as benchmarks to evaluate additional measurements over the course of a full seasonal cycle.

“SeaZone GeoTemporal has helped us meet the project objectives in a timely and cost effective way,” said John Taylor, operations manager of oceanography at Titan. “The software allows data to be downloaded from the survey instruments at each monthly service interval, imported, quality controlled, analyzed and presented as data reports to the client with a rapid turnaround and consistent approach maintained throughout the duration of the project.” For more information, visit www.seazone.com