10GBASE-ER 10 Gigabit single-mode optical module

The 10GBASE-ER 10 Gigabit single-mode optical module is equivalent to an enhanced version of the 10GBASE-LR 10 Gigabit single-mode optical module. The central wavelength of the module is 1550nm, and it can achieve a transmission distance of up to 40 kilometers through single-mode fiber.

Different from the above optical modules, the 10GBASE-ER 10 Gigabit single-mode optical modules use EML lasers. Due to the high optical power of the laser, in order to ensure the normal operation of the optical module, the input optical power is within the acceptable range to avoid saturation distortion. For example, ≤1km: 10dB; ≤10km: 7dB; ≤15km: 6dB; ≤20km: 5dB.

10GBASE-ZR 10 Gigabit single-mode optical module

The 10GBASE-ZR 10 Gigabit single-mode optical module conforms to the 10GBASE-ZR specification, which is dedicated to Cisco. The same as the 10GBASE-ER 10 Gigabit single-mode optical module, the center wavelength of the 10GBASE-ZR 10 Gigabit single-mode optical module is also 1550nm, and it needs to be used with single-mode fiber, but the difference is that the 10GBASE-ZR 10 Gigabit single-mode optical module The transmission distance of the mode optical module is longer, which can be as long as 80 kilometers.

At the same time, for a link with a transmission distance of less than 80 kilometers, an appropriate fiber attenuator needs to be used, for example, ≤1km: 15dB; ≤10km: 12dB; ≤15km: 11dB; ≤20km: 10dB; ≤30km: 7dB; ≤40km: 5dB; ≤50km: 2dB.