Berk-Tek OM4 Pre-Terminated Fiber Assemblies Successfully Exceed 800m Distance


By: Lisa Moughan, Nexans, Inc., Press Contact

Nexans’ Data Communications Competence Center (DCCC) at Berk-Tek, in New Holland PA, challenged the performance boundaries of Berk-Tek Pre-Terminated Optical Fiber Assemblies with rigorous experiments using a variety of test configurations and platforms. The results demonstrated that Berk-Tek’s GIGAlite-10 OM3, GIGAlite10-FB OM4, and GIGAlite10-XB OM4+ cables consistently exceed the IEEE Standard for both 40G and 100G Ethernet by a substantial margin.

The DCCC results are particularly noteworthy not only for the distances achieved, but also due to the utilization of Frame Error Rate testing instead of the more commonly used Bit Error Rate testing. In Frame Error Rate Testing, a single bit error will cause the entire frame to be discarded. This approach more accurately reveals the impact of errors on the application than BERT and is therefore a more meaningful metric. This testing arrangement means that the systems successfully exceeded the desired 10-12 Frame Error Rate for 40G over five hours rather than the 32 second minimum duration of Bit Error Rate testing. Likewise, the 100G channels were tested successfully over two hours instead of the 13 second minimum BERT duration. In addition, the multi-connector channel configurations made the tests more challenging.

During the 40G Frame Error Rate testing using Avago 40G QSFP+ transceivers, the Berk-Tek standard OM3 fiber achieved 202 meters, which is double the reach specified by the IEEE 40GBASE-SR4 standard. Even more impressive were the results of the OM4 tests with a 10-connector channel where the Berk-Tek Pre-Terminated Optical Fiber Assemblies successfully transmitted beyond 800 meters, more than five times the reach specified by the standard. Separately, during the 100 Gb/s Frame Error Rate testing, Berk-Tek’s OM3 fiber met a 10-12 Frame Error Rate over 252 meters with three connections while the OM4 fiber reached 352 meters with 4 connections, more than double the reach of the IEEE 100GBASE¬SR10 standard.

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Article contributions:
Eric Lawrence, Nexans, Inc., VP Emerging Technologies & Technical Director
Mike Connaughton, RCDD, Berk-Tek, Fiber Product Manager
Alfred Flores, RCDD, Berk-Tek Pre-Terminated Optical Fiber Product Manager

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