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==CFP standardization==
The CFP transceiver is specified by a [[multi-source agreement]] (MSA) between competing manufacturers. The CFP was designed after the [[small form-factor pluggable transceiver]] (SFP) interface, but is significantly larger to support 100 Gbit/s. While the electrical connection of a CFP uses {{nowrap|10 x 10 Gbit/s}} lanes in each direction (RX, TX)<ref>{{Cite web | title=CFP MSA Hardware Specification, Rev. 1.4 | url=http://www.cfp-msa.org/Documents/CFP-MSA-HW-Spec-rev1-40.pdf | accessdate=2010-07-02}}</ref> the optical connection can support both {{nowrap|10 x 10 Gbit/s}} and {{nowrap|4 x 25 Gbit/s}} variants of 100 Gbit/s interconnects (typically referred to as 100GBASE-SR10 in 100 meter MMF, 100GBASE-LR10 and 100GBASE-LR4 in 10 km SMF reach, and 100GBASE-ER10 and 100GBASE-ER4 in 40 km SMF reach respectively.)<ref>{{Cite web | title=Operational Considerations for Deploying 100 Gigabit Ethernet ,the original 10x10 start from Santur Corporation, and then the advanced version CFP10x10 | url=http://www.nanog.org/meetings/nanog51/presentations/Monday/NANOG51.Talk32.hankins-nanog51-100-gbe.pdf | accessdate=2012-01-12}}</ref>
In March 2009, [[Santur Corporation]] demonstrated a 100 Gigabit pluggable CFP transceiver prototype.<ref>{{cite web |title= Santur Delivers the World’s First 100Gb/s Transceiver Platform for Client Connectivity Based on Photonic Intelligent Integration |url=http://www.santurcorp.com/pressrel_03-23-09b.htm |date= March 23, 2009 |work= news release |archiveurl= http://www.webcitation.org/5iQH3sIGw |archivedate= July 20, 2009 |deadurl=yes |accessdate= May 27, 2013 }}</ref>
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