Wiring in the data center, for different types of optical modules how to match the corresponding types of fiber jumpers? Small series will be a sort of knowledge through this article, which will hopefully provide a corresponding help.
Optical module has multiple classification forms can follow package classification (SFP, SFP +, XFP, XENPAK, X2, SFP28, QSFP +, QSFP28, CFP2 etc.), according to the transmission distance classifier according to the wavelength of the classification, a rate classification, followed with easily skylight communication (etulink.com) to see how with a corresponding optical fiber jumper type optical module 10G SFP +?
Patchcord type
When determining the type of optical fiber jumper, the interface type is one of the essential factors of determination. We know that the physical optical interface is used to connect fiber optic cable interfaces, usually SC, LC, FC, ST, MPO / MTP and other types. Different optical modules corresponding to different optical interfaces. Common Interface optical modules usually have two ports (one for receiving an optical signal, a signal for emitting light), i.e. the LC duplex SC or duplex, therefore, requires using a duplex SC / LC fiber jumper. BiDi single fiber and the optical module has only one port (either the received optical signal, and can transmit an optical signal), it is necessary to use simplex fiber optic jumpers.
In addition to fiber jumpers is determined according to the type of interface types also need to consider the transmission mode fiber jumpers, depending on the transmission mode fiber jumpers can be divided into single-mode fiber and multimode fiber patch jumper both types. Single-mode fiber jumper is 9/125 fiber diameter glass optical fiber, the multimode fiber jumper is OM1 62.5 / 125 fiber diameter or fiber diameter OM2 50/125 glass fiber, in addition, 10G OM3 and OM4 multimode fiber jumper type. Different jumper for different usage scenarios. Single-mode fiber jumper support long-distance transmission, the multi-mode fiber generally used for short-range link jumpers.
10G SFP + module with corresponding optical fiber jumper type
10G optical module refers to an optical module may transmit and receive data signals per second 10.3GbpsG. The different packages, 10G XENPAK optical module can be divided into an optical module, an X2 optical module, the optical module and the XFP optical SFP + module, is currently popular optical module 10G SFP +, and it is more popular is because of the strong compatibility, size small, low cost, low power consumption factors.
The following table introduces the fiber jumper type optical 10G SFP + modules correspond used
Users ask: single-mode fiber jumper type can be inserted in the multi-mode optical module do?
A: First, the divergence angle of light emitted signals a large multi-mode optical module, the single-mode fiber jumper and small pore size, fiber ran too light, it can not long-distance transmission, and a long single-mode fiber jumper, has not been reached light attenuation may be finished to the end, so this is not interposed communication link. On the other hand, the optical module of different transmission distances are not recommended for docking, because the light transmission module interface specifications different from the large difference, but if you only need a short-range transmission with optical modules do not have long-distance transmission, after all transmission high cost of long distance optical module.
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