QSFP + Performance Characteristics

- Oct 13, 2017-

QSFP + is a new generation of hot-swappable interfaces for high-performance switches, routers, servers and host bus adapters used in computer applications and telecom applications. This interface is the industry's most compact independent 4-channel pluggable interface, supports up to 40Gbps (4-channel x10Gbps) data rate, QSFP+ while backward compatible with 5Gbps, 2.5Gbps data transfer rate. 40GQSFP + high-speed cable for short-distance QSFP equipment between the stack and set.

QSFP + pluggable interface is one of the more commonly used, this standard under the 40G QSFP + a total of three types, respectively, QSFP +, 40G SR4 QSFP + and 40G LR4 parallel single-mode (Parallel Single-Mode, PSM) optical module. Today, FS.COM mainly to introduce these three common 40G QSFP +, including what it is, what performance, etc., hoping to buy for everyone to help.

QSFP + is generally connected with LC connector, can support single-mode fiber maximum transmission distance of up to 10km. QSFP+ This optical module has four independent transmit and receive optical signal channels, the need to use MUX or DEMUX to optical signal reuse and demultiplexing. At the receiving end, four channels with a transmission rate of 10 Gbps are transmitted at the same time. QSFP+ When these serial data streams are passed to the laser driver, the laser driver uses direct modulation lasers (DMLs) to control the wavelength. The optical signals modulated by the direct modulation laser are then multiplexed and multiplexed together for transmission over a single mode fiber. When the receiver reaches the receiver, these transmitted signals are then demultiplexed into four channels with a transmission rate of 10 Gbps. And then PIN detector or transimpedance amplifier for each data stream to restore, QSFP+ and finally Jiang light signal sent out.

QSFP + is used in conjunction with MPO / MTP connectors in 40G data transmission. Unlike QSFP +, this optical module is often used for multi-mode fiber transmission, can support OM3 jumper of about 100 meters of signal transmission and OM4 jumper about 150 meters of signal transmission. In the transmission side of the transmission signal, the first laser array will be converted into electrical signals optical signals, QSFP+ through the band-like multi-mode fiber parallel to send. When the receiver receives the signal, the photodetector array converts the parallel optical signal into a parallel electrical signal.


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