I was looking into the highest bandwidth optical transceivers. 400Gbps were easy enough to find so thanks for posting this. I honestly didn't know there were 1.6Tbps transceivers like this.

One note: I believe the SMF max fiber length is 2km not 1m [1]. The data sheet [2] also says:

> - 2000m max on single mode fiber

[1]: https://www.vitextech.com/products/1-6t-osfp-2fr4

[2]: https://resource.fs.com/mall/resource/cn_osfp-2fr4-16t-data-...