Next show in
 d  h  m
31 January 2011.
Systems vendor Infinera has developed software-configurable optical modulation for its coherent optical transmission systems.  Called FlexCoherent, the new technology will allow carriers to choose which coherent optical modulation format they would like to operate on a particular 40 or 100Gbps route.
 
Called FlexCoherent, the new technology will allow carriers to choose which coherent optical modulation format they would like to operate on a particular 40 or 100Gbps route.

With different modulation schemes suiting different route profiles, this technology will allow carriers to optimise their routes, while also providing the flexibility to change the selection if the route is reconfigured.

Supported modulation formats will include PM-BPSK (polarization-multiplexed binary phase-shift keying) and PM-QPSK (polarization-multiplexed quadrature phase-shift keying), which is the scheme specified in the OIF framework for 100Gbps long-haul transmission; new schemes will be supported as they get adopted by the industry.

Infinera has already conducted customer trials of the FlexCoherent technology in submarine networks at both 40 and 100Gbps.  The 40Gbps functionality will be available mid-year, and the 100Gbps capability will be introduced in 2012 at the same time as the company’s 500Gbps photonic integrated circuit (PIC).
 
by Pauline Rigby.