Are You ACQUAINTED WITH QSFP-40G-SR4?

 The rapid growth of server, network, and internet traffic drives the necessity for higher data rate, higher density, and less expensive optical fiber Ethernet solutions, especially in data centers. As 10 Gbit/s speed isn't fast enough for some enterprises, the IEEE 802.3 working group set up the 802.3ba standard of 40 and 100 Gbit/s. For 40G port types, there are 40G-CR4, 40G-KR4, 40GBASE-SR4, 40GBASE-LR4, 40GBASE-ER4, 40G-FR, 40GBASE-T. As speed and performance needs increase, optical transceivers have grown to be a fundamental element of overall system design. The transceiver supporting 40G is named the Quad Form-factor Pluggable module. This article will introduce something about QSFP- 40G-SR4.

40GBASE-SR4 ("short range") is a port type for multi-mode fiber and uses 850nm lasers. It's used for short range fiber connection. Its Physical Coding Sublayer 64b/66b PCS is defined in IEEE 802.3 Clause 82 and its own Physical Medium Dependent PMD in Clause 86. It uses four lanes of multi-mode fiber delivering serialized data for a price of 10.3125 Gbit/s per lane. 40GBASE-SR4 includes a reach of 100 m on OM3 and 150m on OM4. There's a longer range variant 40G-eSR4 with a reach of 300 m on OM3 and 400 m on OM4. This extended reach is the same as the reach of 10G-SR.

The QSFP 40G-SR4 module supports link lengths of 100 meters and 150 meters, respectively, on laser-optimized OM3 and OM4 multi-mode fibers. It needs special MTP/MPO cabling. And MTP/MPO fiber cable is a ribbon band that bundles together usually 12 fiber strands. The transceiver mainly allows 40G optical links over 12-strand high- bandwidth MPO/MTP multi-fiber cable. But only 8 strands are utilized by the QSFP-40G-SR4 transceiver . With a growing number of network connections in data centers, the 12-Fiber channel 40GbE migration plan is quickly learning to be a matter of survival. Create a straightforward and cost-effective migration path by installing a structured cabling system can support your own future 40GbE networking needs.

Here are the merchandise information regarding 40G-SR4 QSFP+ transceivers:

4-lanes in 850 nm vertical cavity surface emitting laser

Electrically hot-pluggable and possible for ease of insertion and extraction

Supports diagnostic features, providing real-time monitoring of transmitted optical power

Received optical power, laser bias current, temperature, supply voltage

Industry-standard MTP (MPO) 1x8 or 1x12 ribbon cable connector

Maximum link lengths of 100m on OM3 multi-mode fiber; 150m link lengths on OM4 multi-mode fiber

Case operating temperature range: 0 to 70 centigrade(32 to 158 Fahrenheit)

Compliant with QSFP+ MAS

Cisco QSFP-40G-SR4 module may also be found in a 4x10G mode for interoperability with 10G-SR interfaces up to 100 and 150 meters on OM3 and OM4 fibers, respectively. The 4x10G mode procedure is allowed by the optimization of the transmit and receive optical characteristics of the QSFP-40G-SR4 to avoid receiver overload or unnecessary triggering of alarm thresholds on the 10GBASE-SR receiver, and at the same time is totally interoperable with all standard 40G-SR4 interfaces. The 4x10G connectivity is usually achieved using an external 12-fiber parallel to 2-fiber duplex breakout cable (LC-LC Duplex 10G OM4 MM), which connects the 40G-SR4 module to four 10GBASE-SR SFP+ MMF. This connectivity can also be achieved using an 8-fiber OM4 to 12 strands MTP harness cable.

This QSFP-40G-SR4 is optimized to ensure interoperability with any IEEE 40G-SR4 and 10G-SR (in 4x10G mode). Besides, we've a test center with professionally trained staff, advanced test facilities and comprehensive original-brand switches, to make sure our customers to get the optics with superior quality.

I'm a Fiber Optic Technician from OEMfibers with an increase of than 6 years' experience in fiber optic system testing. I'm competent in using standard fiber optic preparation, splicing equipment, OTDRs and other testing equipment.