New Field Trial Distance Record of 3040 km on Wide Reach WDM with 10 and 40 Gbps
Transmission Including OC-768 Traffic Without Regeneration
David Z. Chen, TJ Xia, Glenn Wellbrock
Verizon Communications Inc., 2400 N. Glenville Drive, Richardson, Texas 75082
Phone: (972) 729-5624, Fax: (972) 729-5392, david.chen@verizon.com
Pavel Mamyshev, Jim Zik, Steve Penticost
Mintera Optical Networks, 35 Nagog Park, Acton, MA 01720
Office: (978)929-2811, Fax: (978) 645-1381, pavel.mamyshev@mintera.com
Guido Grosso, Allen Dismukes, Philippe Perrier, Hervé Fevrier
Xtera Communications, Inc. 500 W. Bethany Drive, Allen, Texas 75013
Office (972)649-5044, Fax: 99720 747-0642, ggrosso@xtera.com
Abstract: Verizon, Xtera, and Mintera successfully transmitted 40Gbps over 3040Km with RZ-DPSK and 2560Km with CS-RZ on an all-Raman ULH system loaded with 68x10Gbps channels on Verizon’s network. Real traffic OC-768 data-streams from Juniper routers were successfully propagated.
© 2006 Optical Society of America
OCIS codes: (060.2330) Fiber optics communications; (060.4080) Modulation
Introduction
After two successful field trials at 40Gbps over Verizon’s metro ring in San Jose and 1200 km ULH field trial from Sacramento, CA to Salt Lake City, UT in 2004 [1, 2]; Verizon, Xtera and Mintera teamed up for a 10/40Gbps ULH field trial at a record distance of 3040 km on Verizon’s Dallas metro SSMF fiber ring in November 2005. This field trial was conducted under the high loss conditions due to the numerous metro ODF connectors. For every 80 kilometer span, the loss on the fiber is about 21 dB, with an average of 5 dB loss for connectors. There was no special inline dispersion compensation used for the RZ-DPSK 40Gbps signal [3]. The ULH system [4] with its 100 nm spectrum window, covering C to extended L band, can provide 240x10Gbps channels at 50 GHz channel spacing, or 120x40Gbps channels at 100 GHz channel spacing. It also provides flexible Raman gains, ranging from 10 dB to 75dB. This field investigation of a 10/40Gbps overlay carrying an OC-768 application demonstrates that optical 40Gbps is a viable solution to be considered for future deployment. In addition to the RZ-DPSK format, CS-RZ at 40Gbps was also tested; an end ~10-4 BER was obtained after 2560 km without OEO. This is the first demonstration of CS-RZ at 40Gbps over such a distance in a field environment. The basic 10/40Gbps ULH trial setup environment is shown in Figure 1.
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Figure 1, Verizon 80 km loop, Xtera 3040 km all-Raman ULH system, Mintera 40Gbps transponders.
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