This article briefly introduces the application scenarios of QSFP-DD in data centers—mid-range transmission.QSFP-DD Mid-Range Optical ModulesThere are various types of QSFP-DD optical modules for 2km-10km transmission.The main focus is on four models: FR4/FR8 (2km) and LR4/LR8 (10km).QSFP-DD FR4 Optical ModuleThe "FR" in QSFP-DD FR4 optical module denotes a transmission distance of 2km.

The 200G QSFP-DD PSM8 utilizes NRZ encoding rules and employs parallel single-mode 8 lanes, also known as parallel single-mode technology, in its optical module. Whether it's a 40G, 100G, or 200G optical module, the cost advantage of PSM technology over wavelength division multiplexing technology is evident.The application of 200G optical modules in data centers raises the bar for manufacturer

Switches come in three types: those with only electrical ports, those with only optical ports, and those with a mix of both electrical and optical ports. There are two main port types: optical and electrical. The following information outlines the differences between switch optical ports and electrical ports, compiled by Walsun.Optical ports on switches typically require the insertion of optical m

Concepts Simplex: Data transmission supports data transfer in only one direction.Duplex: Between two communication devices, bidirectional data transfer is allowed. Typically, there are two duplex modes: half-duplex and full-duplex.Full-Duplex A full-duplex system permits simultaneous bidirectional data transmission between two devices. Common telephones and mobile phones are examples of full-duple

During network deployment, it is common to encounter situations where one end of the network device has a Gigabit optical port while the other end has a Gigabit electrical port. The optical port accommodates optical modules that connect to fiber optics, while the electrical port accommodates Ethernet cables, making direct connection impossible. Regular 10 Gigabit optical modules cannot fulfill thi