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OIF to develop flex coherent DWDM transmission framework for long haul, metro applications
Announced Date: 11/19/2015 Published Date: 11/20/2015

The Optical Internetworking Forum (OIF) announced that its members have commenced work to specify a framework for Flex Coherent DWDM Transmission targeting applications for long haul and metro networks and data centre interconnection.

The new framework under development will build upon work the OIF has completed relating to 100 Gbit/s long haul DWDM and additionally provide guidance for 400 Gbit/s systems.

The OIF noted that dynamic networks require flexibility in terms of reach, data rate, and spectral efficiency, which can be accomplished through enabling flexible transceiver attributes, specifically modulation format, symbol rate and number of subcarriers.

The flex coherent DWDM framework will outline a software-defined optics ecosystem initially leveraging past and current OIF projects for tunable lasers, high bandwidth PMQ modulated transmitters and integrated coherent receivers. The flex coherent DWDM transmission will be based on the modulation formats QPSK, 8QAM and 16QAM for long haul and metro applications, and on 32QAM and 64QAM for data centre interconnect applications.

The OIF also announced the results of its leadership elections and has appointed Peter Landon of BTI Systems as the chair of the Networking & Operations Working Group committee for 2-year term. Newly elected directors are as follows: Ian Betty of Ciena (2-year term); Tom Issenhuth of Microsoft (2-year term); and Mike Tessaro of Qorvo (1-year term).

In addition, Junjie Li of China Telecom was re-elected to the board for a 1-year term. John McDonough of NEC America will serve as president. Dave Brown of Alcatel-Lucent will continues to serve as VP of marketing and Dave Stauffer of Kandou Bus continues to serve as secretary/treasurer.

Commenting on the flex coherent DWDM framework, Junjie Li of China Telecom and an OIF board member, said, "We have discussed the hardware implications of SDN for a couple years now.. there is a need to move away from fixed performance transceivers in order to provide service providers with a flexible solution, complete with software 'knobs' that can be dialled-in to achieve the desired performance".