The application guideline of optical modules and fiber connectors
Posted on Mar 30, 2017 by cozlink.com
For having a better understanding of optical modules and fiber connectors, this tutorial will introduce the application guideline of them, and we hope that this article will be helpful for you.Classification of moduleClassified by rate: 100BASE, 1000BASE, 10GE of Ethernet application; 155M, 622M, 2.5G, 10G of SDH application.Classified by form factor: 1 x 9, SFF, SFP, GBIC, XENPAK, XFP1 x 9: Welding type optical module, generally the speed is not higher than Gigabit, mainly uses SC interface.SFF: Welding type small form factor optical module, generally the speed is not higher than Gigabit, mainly uses LC interface.GBIC: Hot-pluggable Gigabit interface optical module, adopts SC interface.SFP: Hot-pluggable small form factor optical module, the highest rate can reach 4G, mainly uses LC interface.XENPAK: Can be used in the 10G Ethernet, mainly uses SC interface.XFP: 10G optical module, can be used in the 10G Ethernet, mainly uses LC interface.Classified by Laser type: LED, VCSEL, FPLD, DF..
How to distinguish the single-mode and multimode optical modules?
Posted on Jul 12, 2017 by cozlink.com
We know that optical modules can be divided into single-mode optical modules and multimode optical modules are usually marked on the module. Single mode to SM, for long-distance transmission, fiber color is yellow; multi-mode is MM, usually used for short-distance transmission, fiber color is orange. In addition to these, how can we distinguish between single-mode and multimode?1. The wavelengths are different The general multi-mode light wavelength of 850nm, the single-mode optical wavelength is mainly 1310nm and 1550nm-based. Multi-mode optical module due to inter-mode dispersion is more serious, can only be used for short-range transmission (SR); and the single-mode optical module for LR, ER, ZR and other long-distance transmissions. Under normal circumstances, the transmission distance of 2km or less, known as the multi-mode module; transmission distance of 2km or more, known as the single-mode module.2. The scopes of application are differentMulti-mode optical modules are use..
According to the physical standard, Cisco SFP optical module can be divided into 1000BASE-T, 1000BASE-SX, 1000BASE-LX / LH, 1000BASE-EX, 1000BASE-ZX, 1000BASE-BX10-D / U optical module. The Cisco GLC-LH-SM optical module is a 1000BASE-LX / LH optical module, which will be covered in detail in this article.Cisco GLC-LH-SM SFP optical module overviewThe Cisco GLC-LH-SM SFP optical module is a very popular hot-swappable module that utilizes a duplex LC interface that is the smallest Gigabit Ethernet optical module for high-density fiber optic applications. This optical module conforms to the SFP MSA protocol and can be used in both single-mode fiber applications and multimode fiber applications. The Cisco GLC-LH-SM SFP optical module is composed of 1310nm FP laser emitters, PIN photodetectors, transimpedance amplifiers (TIA), microcontrollers (MCUs) and other components, in line with IEEE 802.3z 1000BASE-LX standard, the farthest supporting distance up to10 km transmission. In order ..
For most data centers and network service providers, if you want to be competitive, you must continually improve your network speed to meet people's growing network needs. Over the past few years, 40G networks is very popular, and now according to authoritative statistics, by 2018, the world will have 38% of service providers to deploy 100G network, which means 100G era has arrived. 100G optical module is an important part of the 100G network, and 100G QSFP28 optical modules is the industry's most respected 100G optical module, this tutorial will be introduced in detail.About 100G QSFP28 optical modulesThe encapsulation of 100G QSFP28 optical module and 40G QSFP + optical module is the same , and both are using four Fiber Channel to transmit data, the difference is that the transmission rate of 100G QSFP28 optical module fiber channel can be up to 28Gbps, mainly for 100G transmission applications Compared to 100G CFP optical modules, the 100G QSFP28 optical module is better suited for ..