What are QSFP+ Module and CFP Module?

A transceiver module is really a self-contained component that can both transmit and receive. The transceiver acts to connect the electrical circuitry of the module with the optical or copper network. Devices for example routers or network interface cards provide one or more transceiver module slot (like GBIC, SFP, XFP) into which you can insert a transceiver module which is appropriate for that connection.

The optical fiber, or wire, connects to a connector on the transceiver module. There are multiple kinds of transceiver module available for use with different types of wire, fiber, different wavelengths within a fiber, as well as for communication over different distances.

The reason why the fiber optic transceiver received so much attention, because it has so many advantages in contrast to other way of communication, for example large capacity, long distance transmission, small size, light weight, easy to construct and keep, are less expensive and so on. In the following I must possess a brief introduction of 40G QSFP+ Module and CFP module.

What is QSFP+?

The 40GBASE QSFP+ (Quad Small Form-Factor Pluggable Plus) modules offer customers a multitude of high-density 40 Gigabit Ethernet connectivity options for data center, high-performance computing networks, enterprise core and distribution layers, and repair provider transport applications.

Main features of Cisco 40GBASE QSFP+ modules include:

• Support for 40GBASE Ethernet;
• Hot-swappable input/output device that connects to a 40-Gigabit Ethernet QSFP+ Cisco switch port;
• Flexibility of interface choice;
• Interoperable along with other IEEE-compliant 40GBASE interfaces available in various form factors;
• Support for "pay-as-you-populate" model;
• Support for that Cisco quality identification (ID) feature which enables a Cisco switch to identify if the module is certified and tested by Cisco.

40Gb/s QSFP+ IR4 Optical Transceiver

What's CFP?

CFP stands for C form-factor pluggable, it is a multi-source agreement to produce a common form-factor for that transmission high-speed digital signals. The c means the Latin letter C accustomed to express the amount 100 (centum), as the standard was primarily produced for 100 Gigabit Ethernet systems. The CFP was created following the SFP interface, but is significantly larger to support 100 Gigabit by utilizing 10 lanes in every direction (RX, TX) with 10Gb/s each.

As the electrical connection of the CFP uses 10 x 10Gbit/s lanes in every direction (RX, TX), the optical connection can support both 10 x 10Gbit/s and 4 x 25Gbit/s variants of 100Gbit/s interconnects (typically known as 100GBASE-LR10 and 100GBASE-LR4 in 10 km reach, and 100GBASE-ER10 and 100GBASE-ER4 in 40 km reach respectively.) In March 2009, Santur demonstrated one hundred Gigabit pluggable CFP Transceiver prototype, Santur 100G CFP Transceiver.

CFP module is per a multi-source agreement (MSA) between competing manufacturers. The CFP MSA defines hot-pluggable optical transceiver form factors to allow 40Gb/s and 100Gb/s applications, including next-generation High Speed Ethernet (40GbE and 100GbE). Pluggable CFP, CFP2 and CFP4 transceivers will support the ultra-high bandwidth requirements of information communications and telecommunication networks that make up the backbone of the internet.

For more info, please browse our website. For purchasing more fiber optical modules, please contact a Sopto representative by calling 86-755-36946668, or by sending an email to info@sopto.com.

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