FEATURE NEWS:
Corning’s savvy fibres
Corning’s current product range for the communications market has strength in depth. It has MetroCor for high-bit-rate, regional and metropolitan ring networks; SMF-28e for regional, metro, CATV and access networks, full spectrum (CWDM and DWDM) applications and operating wavelengths from the 1310 nm band to the 1625 nm band; NexCor for access networks, including fibre to the home and cable TV; and InfiniCor laser-optimized optical fibres for high-speed, 850 nm applications for premises, enterprise or local area networks.
Early this year, Corning announced the availability of its InfiniCor eSX+ optical fibre, an extended reach, 10 Gigabit Ethernet-capable multimode fibre for premises networks. This announcement was the culmination of over one year of system functionality testing associated with the new product.
In a customer demonstration InfiniCor eSX+ gave an error-free 10 Gb/s performance over 550 metres of cabled fibre and showed the impressive performance of the new fibre type with a variety of publicly available 850 nm VCSEL transceivers under real-world conditions. The demonstration featured up to six individual cables joined by as many as nine connector pairs and 12 splices, representing a network with numerous passive cross-connects. A variable attenuator absorbed the remaining system margin, provided a measurement of spare headroom and showed the robust nature of 10 Gb/s multimode fibre technology.
During the demonstrations, Corning's technicians added and removed connections so that viewers could watch the impact on optical performance on the bit error rate tester (BERT). Additionally, visitors could see the technicians reduce the received signal power with an in-line variable optical attenuator and observe eye pattern signal degradation on the display real-time. As the system was driven into the failure threshold, customers could hear an audio tone signifying a received bit error.
Eventually, enough attenuation was added to cause the frequency of errors to increase and finally 'flat-line' as the error detector sounded a constant high-pitch tone. Corning observed: "The demonstration showed that the optical signal needed to be attenuated by a factor of 10 in order to get the 550 metre links to produce errors, which impressed both the system-testing savvy customers and the field network installers."
Company: |
Corning Inc |
Country: |
USA |
Fax: |
+1 607 974 7549 |
Email: |
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Website: |
www.corning.com/opticalfibre |