CFP2 transceivers unleashed at OFC/NFOEC

Created April 16, 2013
Technologies and Products

The first CFP2 transceivers for singlemode and multimode client-side applications in optical networks have arrived. Cisco Systems has also demonstrated the CPAK, its own transceiver alternative to the CFP2. The announcements were made at the recent OFC/NFOEC exhibition held in Anaheim, California.

The CFP2 is the next pluggable form factor after the CFP and is half the size. It has a maximum power consumption of 12W compared to the CFP’s 32W. Another difference between the CFP and CFP2 form factors is that the CFP2 uses a 4x25Gbps electrical interface, which means that the CFP2 does not need the “gearbox” IC that translates between 10×10-Gbps lanes to the 4x25Gbps electrical lanes that interface to the optics. 
Finisar has detailed two CFP2 modules, one implementing the IEEE 100GBASE-LR4 10km standard and the other, the IEEE 100GBASE-SR10 100m multimode standard. The company is using directly-modulated, distributed feedback (DFB) lasers for its CFP2 LR4. In contrast, CFP LR4 modules use the more expensive electro-absorption modulator lasers (EMLs). Finisar’s LR4 transceiver consumes 7W only.
Oclaro, Fujitsu Optical Components, NeoPhotonics and Oplink all introduced LR4 CFP2s. NeoPhotonics also announced the first 10×10 MSA module in a CFP2 package.
Another company supporting the 100GBASE-SR10 standard in a CFP2 module is Avago Technologies. The CFP2 SR10 can be interfaced to 10 Gigabit Ethernet (GbE) SFP+ modules or combinations of 10GbE SFP+ and 40GbE QSFPs. 
At OFC/NFOEC Cisco showed its CPAK module, the first product to be announced following Cisco’s acquisition of silicon photonics player, LightWire.
Cisco says the CPAK is more compact than the CFP2 transceiver, but vendors backing the CFP2 point out that the proprietary CPAK is only slighter smaller than the MSA module.  At OFC/NFOEC, Cisco demonstrated the CPAK implementing the 100GBASE-LR4 and -SR10 standards. 
In another development, Oclaro detailed integrated tunable transmitter and coherent receiver components that promise to enable 100Gbps coherent modules in the CFP2 form factor. The CFP2 100Gbps coherent pluggable module is likely to have a reach of 80 to 1,000km, suited to metro and metro regional networks. Oclaro expects such a CFP2 module to be available from mid-2014.
By Roy Rubenstein

See Also: 

Press release: Avago Technologies Announces World’s First 100G CFP2 SR10 Optical Transceiver
Press release: Finisar Demonstrates High-Density CFP2 Single Mode and Multimode 100G Modules
Press release: NeoPhotonics Announces 100G CFP2 Transceivers for Datacom and Telecom Applications
Press release: Fujitsu Introduces Cutting-edge 100G Optical Component and Module Solutions at OFC/NFOEC 2013
Press release: Oplink to unveil its 100G CFP2 transceiver at OFC/NFOEC 2013
Press release:  Oclaro Reinforces 100G Leadership at OFC/NFOEC
Press release: Oclaro Achieves Key Milestone in Indium Phosphide Tunable Transmitter Development for 100G Coherent CFP2
Press release: Cisco Introduces Next-Generation 100 Gigabit CMOS-based Transceivers
Gazettabyte: OFC/NFOEC 2013 product round-up – Part 1


This article was written
by Roy Rubenstein

is the editor of and has been researching and writing about the telecom and semiconductor industries for over 20 years.