[Cabling knowledge] how to distinguish between optical modules?

The fiber optic connector consists of a plug of fiber and fiber, and the plug consists of a pin and a peripheral locking structure. According to different locking mechanism, fiber optic connectors can be divided into FC type, SC type, LC type, ST type and KTRJ type. FC connector with threaded locking mechanism, is invented earlier, the most used one of the fiber optic active connector. SC is a rectangular connector, developed by the NTT, without screw connection, can be directly plug, compared with the FC connector with a small operating space, easy to use. Low-end Ethernet products are very common. LC is developed by LUCENT Mini type SC connector, with a smaller size, has been widely used in the system, is the future development of fiber optic connector in a direction. Low-end Ethernet products are very common. ST connectors are developed by AT & T, with bayonet locking mechanism, the main parameters of the indicators and FC and SC connector quite, but the company is not commonly used, usually used in multi-mode device connection, and other manufacturers equipment When docking, use more. KTRJ pin is plastic, through the needle positioning, with the increase in the number of plug, the mating surface will wear, long-term stability as ceramic pin connector. First, Cisco manufacturers 1, multi-mode optical module Model: GLC-SX-MM Description: SFP, 1000Base-SX gigabit optical module, 850 nm, multi-mode 550 meters 2, single-mode optical module Model: GLC-LH-SM Description: SFP, 1000Base-LX Gigabit optical module, 1310 nm, single mode 10KM Second, Huawei manufacturers 1, multi-mode optical module Model: eSFP-850nm-1000Base-Sx / FC200 MM Description: Optical transceiver module (eSFP, 850nm, 2.125Gb / s multi-rate, -9.5dBm ~ -2.5dBm, -17dBm, LC, multimode, 0.5km) 2, single-mode optical module 10km Model: eSFP-1310nm-1000Base-Lx SM Description: Optical transceiver module-eSFP-1310nm-1.25Gb / s - 9dBm - 3dBm - 20dBm-LC-single-mode -10km 3, single-mode optical module 40km Model: eSFP-1310nm-1000Base-Zx Description: Optical transceiver module-eSFP-1310nm-1.25Gb / s - 5dBm-0dBm - 23dBm-LC-single-mode -40km Huawei identified SM as single mode, MM is multi-mode. The difference between single mode and multimode General manufacturers will be in the color of the ring to distinguish, such as: black pull ring for the multi-mode, the wavelength is 850nm; blue is the wavelength of 1310nm module; yellow is the wavelength of 1550nm module; purple is the wavelength of 1490nm module. Optical module classification XFP optical module Optional wavelength: 850nm, 1310nm, 1270nm, 1330nm, CWDM, DWDM Rate: 10G XFP (10 Gigabit Small Form Factor Pluggable) is a heat exchange, independent of the communication protocol optical transceiver for 10G bps Ethernet, SONET / SDH, Fiber Channel. SFP optical module Optional wavelength: 850nm, 1310nm, 1490nm, 1550nm, CWDM, DWDM Rate: 0-10G DDM: optional Small pluggable transceiver module (SFP), the most widely used. SFP RJ45 electrical port module Interface: RJ45, COPPER Rate: 10/100 / 1000M adaptive, forced 1000M DDM: optional RJ45 electrical small pluggable module, also known as electrical module or electrical module. GBIC optical module Optional wavelength: 850nm, 1310nm, 1490nm, 1550nm, CWDM, DWDM Rate: 1.25G GBIC RJ45 electrical port module Interface: RJ45, COPPER Rate: 10/100 / 1000M adaptive, forced 1000M SFP + optical module Optional wavelength: 850nm, 1310nm, 1270nm, 1330nm, CWDM, DWDM Rate: 10G GigacBiDi series of single-fiber bi-directional optical module is the use of WDM technology to achieve a two-way optical fiber transmission signal (point-to-point transmission, especially fiber resources, the need for a fiber transmission bi-directional signal). GigacBiDi includes SFP single-fiber bi-bi-directional (BiDi), GBIC single-fiber bi-directional (BiDi), SFP + single-fiber bi-directional (BiDi), XFP single-fiber bi-directional ( BiDi ), SFF single-fiber bi-directional (BiDi) and so on. X2 optical module Optional wavelength: 850nm, 1310nm, 1270nm, 1330nm, CWDM, DWDM Rate: 10G XENPAK optical module Optional wavelength: 850nm, 1310nm, 1270nm, 1330nm, CWDM, DWDM Rate: 10G XFP module , XFP transceiver , bidi sfp , SFP+ module , SFP+ transceiver Which is good? First choice Fiberland！Thanks for your concern, to learn more about Fiberland, please enter Fiberland website: http://www.fiberlandtec.com/