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China launches HDMI and DisplayPort alternative — GPMI boasts up to 192 Gbps bandwidth, 480W power delivery
(www.tomshardware.com)
this post was submitted on 07 Apr 2025
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SFP is the modern standard for pluggable laser modules. RJ45 sfp modules exist, but only for 1G and 10G. There's also DAC cables for sfp, but those are limited to 2-3m, and the point was to focus on the benefits of fiber. Maybe the economies of scale necessitate some modern silicon photonics like a fiber on package option, but then you have repairability issues.
The minimum bend radius is mostly because of complete internal reflection, fiber is very flexible, and it's not really possible to break an armored fiber cable by hand. You do have to worry about dust on the ends, though.
Toslink is cool, but it's a very low bandwidth standard, less than 1gbit. You need proper glass fiber and lasers for high bandwidth.