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Friday 12 July, 2019 | RSS Feed

100G QSFP28 Transceivers, Which Is Needed for Your Networking Infrastructure?

by www.fiber-mart.com

The 100G QSFP28 modules are the most popular 100G transceivers on the market today. Among many factors, this is primarily due to their low production cost, efficient size, and high output. This article is going to go over the specs, versions and details that make the QSFP28 market giant that it is today.
fiber-mart.com currently manufactures mainly 4 modules of the 100GB QSFP28: SR4, LR4, CWDM4, and IR4 PSM. Let’s look at what each one provides.
The runt of the 100GB transceivers is the the SR4. While SR stands for “short range” the transceiver still outputs the same 100GB/s speeds as the other drives. QSFP28 SR4 transceiver uses an MTP/MPO interface, using a multi-mode cable for short distances. Both the IR4 PSM and the SR4 use a 12-fiber MTP/MPO patch cable. The advantage of the SR4 is its economical price point. While it doesn’t have the longest distance, it does provide the same top quality speed, only for a fraction of the cost of the higher-end modules. And like all fiber-mart.com modules, it is fully tested on Cisco & Accton devices for application. fiber-mart.com has SR4s in-stock and ready for delivery.
The top end of the QSFP28 product line is the LR4. The LR4 is a full duplex LC module that provides everything you could want in a transceiver. The duplex function allows the LR4 to work as both a transmit and receive path in one module. On the transmit side, 4 lanes of high-end optical signals push out over a staggering 25GBps per lane. On the receive side, the 4 lanes can de-multiplex data streams with a fully integrated de-multiplexer, transforming that data into CAUI-4 electric output. The module has a maximum link length of 10km and operates on 1 single-mode fiber cable with duplex LC connector. All fiber-mart.com LR4 modules have been fully tested on Cisco & Accton devices to make sure they work on your system. This is the best of the line in 100GB transceivers from fiber-mart.com. We always have them in-stock and provide lightning fast delivery.
Along with the LR4, the CWDM4 is another full duplex LC module. Along with the LR4, it pushes out over 100GB from its 4 lanes of high-end optical transmitters and de-multiplexes with the same fully integrated de-multiplexer. The advantage of both the LR4 and CWDM4 modules is the easy of which upgrading can be done. Both modules run on common single-mode duplex LC patch cable requiring no need to replace all of those fiber patch cables. That saves money, headaches and downtime with trying to replace all of that cable. You can also save space with removable “push-pull” tabs. Like all fiber-mart.com modules, it is fully tested on Cisco & Accton devices. The main difference between the CWDM4 to the LR4 is the maximum link length with the CWDM4 having a max length of 2km, suitable for most common demands.
Moving from our duplex LC modules, we get the IR4 Parallel Single Mode Transceiver. The IR4 is an MTP/MPO interface transceiver with 4 independent full-duplex lanes. Along with its LC brothers, it puts out at over 25GB/s per transmit lane and converts input signals with its parallel optical receiver lanes. The transceiver accepts input signals compatible with Common Mode Logic (CML) levels. You also don’t need to sacrifice distance with a 2km range. The IR4 PSM uses single-mode cable meaning it can work over long distances. Like all fiber-mart.com modules, it is fully tested on Cisco & Accton devices. The IR4 PSM is a great choice for customers that don’t want to upgrade to the more expensive LC modules but still high quality speed and distance.

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