10 Gigabit Optical Port Optical Module

The 10G multimode optical module (ie 10G multimode optical module) is a small and pluggable 10G optical module. It mainly realizes short-distance transmission of 10Gbps optical signals through multimode fibers, and the maximum transmission distance is 300 meters. At present, 10G multimode optical modules mainly have two types: 10GBASE-SR and 10GBASE-LRM.

10GBASE-SR 10 Gigabit Multimode Optical Module

The 10GBASE-SR 10 Gigabit multimode optical module follows the IEEE 802.3ae standard and is one of the most common 10 Gigabit optical modules in 10G Ethernet. SR stands for short distance, and the transmission distance when used with multimode fiber (OM3 fiber) up to 300 meters. The module uses a VCSEL laser, which has the advantages of low cost, low power consumption, high density, and small size. In addition, the 10GBASE-SRL available on the market is a simplified version of 10GBASE-SR, so I will not explain it here.

The 10GBASE-LRM 10 Gigabit multimode optical module is a substitute for 10GBASE-LX4. When used with multimode fiber (OM3 fiber), the maximum transmission distance can reach 220 meters, where LRM stands for length extension multipoint mode.

It should be noted that Cisco (or some suppliers that provide Cisco-compatible products) 10GBASE-LRM 10 Gigabit multimode optical modules can support single-mode fiber transmission with a maximum transmission distance of up to 300 meters.

In addition, the 10GBASE-LRM2 optical module on the market is an upgraded version of the 10GBASE-LRM 10 Gigabit multi-mode optical module, with a maximum transmission distance of up to 2 kilometers, which is often used for local area network connections.

10 Gigabit single-mode optical module

The 10GBASE-LR 10 Gigabit single-mode optical module conforms to the 10GBASE-LR Ethernet standard, where LR stands for long distance. The center wavelength of the module is 1310nm, and the maximum transmission distance of 10 kilometers can be achieved on single-mode fiber.

Compared with the 10GBASE-SR 10G multimode optical module using VCSEL laser, the 10GBASE-LR 10G single-mode optical module uses DFB laser, which has higher power and longer wavelength, which can effectively couple optical signals to single-mode fiber for long-distance