QSFP + Optical Module has four independent optical signal sending and receiving channels. It is mainly used for high-speed data transmission of switches, routers and data center equipment .
Classification
There are currently four common QSFP + optical modules on the market:
1. 40G LR4 QSFP + optical module
40G LR4 QSFP + optical module generally used with LC single-mode fiber optic jumpers. The maximum transmission distance can reach 10km. It has the advantages of high density, low cost, high speed, large capacity, and low power consumption. Four data channels can transmit data at the same time.
2. 40G SR4 QSFP + optical module
The working wavelength of the 40G SR4 QSFP + optical module is 850nm.Generally, it is an MPO / MTP connector. The transmission distance when used with the OM3 fiber jumper is 100m, and the transmission distance when used with the OM4 fiber jumper is 150m.
3. 40G LR4 PSM QSFP + optical module
The 40G LR4 PSM optical module is a highly integrated 4-channel optical module. It uses parallel single-mode technology-PSM, which connects 4 channels in parallel. Its transmission distance is 10km. The connector is generally an MPO / MTP connector. Its advantages are High port density and low cost.
4. 40G ER4 QSFP + optical module
The 40G ER4 QSFP + optical module converts four 10G data input channels into four CWDM optical signal channels with a rate of 11.2Gbps, and then multiplexes them into a single channel for 40G data transmission. Its connector is usually LC duplex.
