H3C QSFP-100G-LR4-WDM1300 Compatible 100GBASE-LR4 QSFP28 1310nm 10km DOM Duplex LC Transceiver Module for SMF

The common packaging forms for 100G LR4 transceivers are BOX (box package) and COB (package on chip): COB packaged optical modules are suitable for data center applications. It adopts the method of attaching the laser chip directly to the PCB, which helps to save PCB area and simplify the packaging process, thus effectively reducing the production cost of transceivers.COB package meets the needs of high reliability and low cost. This ensures that the laser chip is not affected by environmental factors such as temperature variations and water vapor while meeting the requirements for lower power consumption, higher reliability, and harsher operating environments.

The modulation mode of the 100G QSFP28 LR is 1x100G PAM4, while the 100G QSFP28 LR4 is 4x25G NRZ.

In 100G LR4, LR4 stands for "Long Reach 4", indicating that it is an optical module for long distance transmission. Where 4 means that four different wavelengths of optical signals are used.