40Gb Ethernet set to be major feature at ECOC

LONDON — 40GbE transceivers and other parts, including testers, are set to be a major talking point at both the exhibitor stands and conferences at this week's European Conference and Exhibition on Optical Communication (ECOC) in Vienna, Austria.

Sumitomo Electric announced at the event it has started sampling to major potential customers a 40Gbit/s Ethernet transceiver module that it plans to start making available in volume during the second quarter of next year.

The company is demonstrating the device — that complies with the 40GbE standard under discussion at IEEE802 committee and which supports a 10km transmission distance — at ECOC.

The 40 GbE CFP transceiver uses a four wavelength CWDM laser diode with a low power drive circuit.

Sumitomo (Tokyo, Japan) says development of the part, and the work at the IEEE towards a 40GbE standard, has been driven by an anticipated infrastructure capacity shortfall as soon as 2010 due to the rapid growth of Internet services.

The IEEE 802.3 standard for 40/100G Ethernet has not yet been finalized. A lot of pieces of that technology still require significant work, according to presentations at an Ethernet Alliance meeting last week.

The company is also part of a multi source agreement (MSA) with other vendors supporting the CFP form factor for transceiver modules. The MSA for 40Gbit/s and 100Gbit/s pluggable modules is supported by Finisar, CoreOptics and Opnext, amongst others.

Finisar is also demonstrating at ECOC an operational Ethernet LR4 CFP optical transceiver transmitting data over 10 km of optical fiber that it claims will be the first demo of its type.

The demonstration will show Finisar's 40GE LR4 transmitting Ethernet traffic error-free over 10 km of single mode fiber. The device will be internally multiplexing four CWDM wavelengths running at 10.3 Gbits/s each. by John Walko


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