100G optical module is an important part of high-speed optical transmission network, some people say that the optical module in the entire communication system, there is a position as a deputy gates. The rapid development of fiber-optic network, the communications industry people are obvious to all, 100G optical module as the mainstay to the 5G network, the market has to tell you the fact that the optical module has changed the original market structure.
100G CFP optical module package
Speaking of 100G optical module standards and types of market mainstream model classification mainly CFP \ CFP2 \ CFP4 and QSFP28 and so on. CFP as the early emergence of the optical module, is now gradually replaced by QSFP28, but the basic principles of optical modules has not changed, we can still learn it to understand 100G optical module. Today we are going to talk about CFP’s multi-source protocol.
The Origin and Application of 100G CFP Optical Module
CFP MSA is an abbreviation for 100G Form Factor Pluggable Multi-Source Agremment. In March 2009, Finisar, Opnext and Sumitomo jointly developed a multi-source protocol that released CFP modules, which are designed to define high-speed Ethernet applications that meet 40G and 100G applications and support the next generation. In June 2010 CFP MSA ushered in new members AVGO and released a new version (Rev 1.4) multi-source protocol.
CFP MSA introduces the CFP module block diagram, the optical part of the DMUX and MUX for the light wave and wave, the use of WDM (wavelength division multiplexing) technology to multiple wavelengths of optical signals in a single-mode fiber transmission, The module can operate under ITU WDM wavelengths. Module using single-fiber connection, can save 2 × (N-1) root fiber, the practical application of single-mode fiber transmission distance of up to 10km or more. In the schematic diagram, N represents the number of optical path channels, M represents the number of circuit channels, generally M and N are not equal. Module electrical interface rate of 10Gbit / s, to achieve 100G rate transmission requires 10 electrical interface to support, 100GBASE-LR4, 100GBASE-ER4 electrical interface for 10, 40GBASE-FR of the electrical interface for the four.
100G CFP optical module hardware definition
The CFP module pins up to 148 pins, which are located at the bottom and top of the module electrical interface. The host can read the module control and status information via the electrical interface, including 6 control pins, 5 hardware alarm pins (including RX_LOS) and 8 MDIO management interface pins. Optical interface part can have SC, LC, MPO and other connector form.
CFP module in the access to the host, according to the monitoring state of the orderly timing switch, the following chart for the module in the various steady-state and transient according to the associated signal flag for state switching.
CFP module operating temperature is not specified, 0 ℃ to 70 ℃, the module manufacturers need to test the process of these two extreme temperature conditions, the performance of the module has been to ensure that the module in the full temperature range can meet the target requirements. The corresponding host also needs to provide the necessary refrigeration system to ensure that the module is operating within this temperature range.
CFP SMA also defines the module size, weight, plug and roll, and so on and the module connected to the host of a variety of mechanical and electrical structures are designed in detail.
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