With the rise of 5G networks, the increase in data traffic and rate has brought about an increase in the demand for optical module rates. The 5G fronthaul part will be upgraded from 10G to 25G, and the data center will be upgraded from 10G and 40G to 100G. The market demand for 100G optical modules will increase significantly.

　　100G QSFP28 optical module is a high-speed optical module applied to 100G Ethernet. It adopts the package form of QSFP28 and is small in size. The QSFP28 optical module has four signal channels, and the maximum transmission rate of each signal channel is 28Gbps. It has a variety of transmission distances to choose from. The QSFP28 optical module used in the InfiniBand system is called EDR. The QSFP28 optical module of EDR has stricter performance requirements.

　　1. Application scenarios of QSFP28 optical modules: QSFP28 optical modules are mainly used in the 100G connection of core switches and core routers in data centers.

　　2. What types of 100G optical modules are common: QSFP28 optical modules, CFP4 optical modules, CFP2 optical modules, CFP optical modules, etc. The current mainstream 100G optical modules are QSFP28 optical modules.

　　3. The operating temperature range of QSFP28 optical module is: the operating temperature range of QSFP28 optical module standard commercial grade products is 0°C-70°C; the operating temperature range of industrial grade products is -45°C-85°C. Commercial grade products are generally used, and some data centers use products with an operating temperature range of 20°C-50°C to reduce costs.