400G QSFP-DD

“SR8” (Short Reach 8) is designed for short-distance transmission over multi-mode fiber, supporting up to 100 meters. “DR4” (Datacenter Reach 4) offers a reach of up to 500 meters over single-mode fiber using four channels. “XDR4” (Extended Reach 4) extends the reach of DR4 to 2 kilometers. “FR4” (Fiber Reach 4) supports up to 2 kilometers on single-mode fiber, utilizing four wavelength-multiplexed channels. “LR4” (Long Reach 4) is optimized for long-distance transmission, supporting up to 10 kilometers with four wavelength-multiplexed channels. “LR8” (Long Reach 8) further extends this capability to 10 kilometers, using eight wavelength-multiplexed channels.

No, QSFP-DD and OSFP are completely different form factors. Each system is designed to support only one specific form factor. For example, if you have a 400G system that uses QSFP-DD, you can use QSFP-DD , QSFP56, or QSFP28 optical transceivers.

Normally, the power consumption of a 400G optical module ranges from 7 to 12W.