QSFP+ (Quad Small Form-factor Pluggable Plus) transceiver interfaces a network device motherboard (for a switch, router, media converter or similar device) to a fiber optic cable, which is widely used for data communications applications. It is a industry format jointly developed and supported by many network component vendors. QSFP+ is also the IEEE standard connector for the emerging 40GbE standard. QSFP+ modules increase the port-density by nearly 3 times when compared to SFP+ module.
Overview on 40G QSFP+ Transceiver
40G QSFP+ transceivers are designed to support Serial Attached SCSI, 40G Ethernet, 20G/40G Infiniband, and other communications standards. The 40G QSFP+ modules are favorable for high density 40G optical network. These modules are designed to operate over single-mode or multimode fiber systems with differently optimized lasers under different standards. 40G QSFP+ transceiver interface can be either duplex LC or 12-fiber MTP/MPO as shown in the following picture. The 40G QSFP+ transceiver module with MTP/MPO interface is a hot-swappable, parallel fiber-optical module with 4 independent 10 gigabit per second data lanes in each direction to provide 40Gbps aggregate bandwidth. 40G QSFP+ modules offer customers a wide variety of high-density 40 gigabit Ethernet connectivity options for data center, high-performance computing networks, enterprise core and distribution layers, and service provider transport applications.
Application of Different 40G QSFP+ Transceivers
The transceiver is used primarily in short reach applications in switches, routers, and data center equipment where it provides higher density than SFP+ modules. With the evolving of the format specification, now in the market, you can find a wide varieties of 40G QSFP+ transceivers including the short distance types, Bidi, and long distance types, of which 40GBASE-SR4 (QSFP-40G-SR4), 40GBASE-LR4 (QSFP-40G-LR4) and 40GBASE-ER4 (QSFP-40G-ER4) are the most commonly used physical layers for 40G QSFP+ modules.
QSFP-40G-SR4 (short range) transceiver has a port type for multimode fiber and uses 850nm lasers. It supports link lengths of 100 m and 150 m respectively on laser-optimized OM3 and OM4 multimode fiber cables. It is commonly used in data centers to interconnect two Ethernet switches with 12 lane ribbon OM3/OM4 cables. Primarily it enables high-bandwidth 40G optical links over ribbon fiber cables terminated with multi-fiber connectors (MTP/MPO), and could also be used along with ribbon to duplex fiber breakout cables for connectivity to four 10GBASE-SR optical interfaces.
QSFP-40G-LR4 (long range)or QSFP-40G-ER4 (extended range) transceiver has a port type for single-mode fiber and uses 1300nm region lasers. It uses two strands of fiber and combines four wavelengths by CWDM technology, delivering serialized data at a rate of 10Gbit/s per wavelength. Thus the optical interface can be simplified to standard LC connectors. QSFP-40G-LR4 transceiver is most commonly deployed between data canters or for IXP (Internet exchange point) site.
The QSFP+ transceiver is a great solution for multi-lane data communication and interconnect applications. fiber-mart.COM offers the best 40G QSFP+ modules. All these 40G QSFP+ modules are Cisco, Juniper, IBM and HP compatible. In addition to 40Gbps Ethernet interconnects, it can be used in datacom/telecom switch, and router connections, as well as data aggregation and backplane applications. Also you can have a wide selection of other transceivers and direct attached cables at fiber-mart.COM, including XFP transceivers, SFP transceivers, CFP modules, copper DAC, active optical cable and so on.
1. What is the CWDM SFP?
The CWDM optical module is an optical module using CWDM technology to implement the connection between the existing network device and the CWDM multiplexer/demultiplexer.
When used with a CWDM multiplexer/demultiplexer, CWDM optical modules can increase network capacity by transmitting multiple data channels with separate optical wavelengths (1270 nm to 1610 nm) on the same single fiber.
The composite optical signal is decomposed at the receiving end using a wave decomposition multiplexer, thereby conserving fiber resources. Therefore, CWDM optical modules are called a low-cost and efficient network solution.
Secondly, the classification of CWDM optical modules
CWDM optical modules can be classified into CWDM SFF optical modules, CWDM SFP optical modules, CWDM GBIC optical modules, CWDM SFP+ optical modules, CWDM XFP optical modules, CWDM X2 optical modules, CWDMXENPAK optical modules, and CWDM LX-4 optical modules.
Third, CWDM optical module application field
CWDM optical modules are widely used in CATV (cable TV), FTTH (Fiber to the Home), 1G and 2G Fibre Channel, 100M and Gigabit Ethernet, Synchronous Optical Network SONET OC-3 (155Mbps), OC-12 (622Mbps) And OC-48 (2.488Gbps), security and protection systems.
Fourth, the advantages of CWDM optical modules
1. Data transmission is transparent;
2, large capacity, so that the huge bandwidth resources of fiber can be fully utilized;
3. CWDM technology greatly saves fiber resources and effectively reduces construction costs;
4. It has networking flexibility, stability and reliability;
5. Compatible with all-optical network switching to realize long-distance non-electrical relay transmission;
6. The simplification of the laser module reduces the size of the equipment and greatly saves the space of the equipment room;
7. The optical layer recovery has independence and can effectively protect data transmission;
8, low insertion loss, low polarization dependent loss
Through the above analysis, have you learned more about CWDM SFP optical modules ? At present, Fiberland Co., Ltd. is selling the above different specifications of CWDM SFP optical modules ,such as CWDM SFF optical modules, CWDM SFP optical modules, CWDM GBIC optical modules, CWDM SFP+ optical modules, CWDM XFP optical modules, CWDM X2 optical modules, CWDMXENPAK optical modules, and CWDM LX-4 optical modules.
If you are interested, please feel free to contact us.