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Basically all fiber data transmission is done in the near-IR between 800 and 1600 nm.

it depends how infrared

(from memory) Current fibers have a dispersion minimum ~1300 nm and an attenuation minimum ~ 1550 nm

Not sure how applicable it is, but the IrDA (Infrared Data Association) protocol tops out at only 16Mbps.

It's not applicable. 40Gbps over fiber is ordinary.

40Gbps per wavelength, not per fiber. Many times 40Gbps over one fiber.

Who does 40Gbps per wavelength?

10/25/50/100 are the common rates in real-world Ethernet PHY standards.

Telecom uses 40G.

False.

>GigaIR: 512 Mbit/s – 1 Gbit/s, NRZI, 2-ASK, 4-ASK, 8b/10b

GigaIR seems to be vapourware from 2008 that died since.

OK, I wasn't aware of these newer specs, it certainly used to be much more limited.

That's like asking the GoKart association how fast you can take a Formula 1 car ;)

IrDA has its uses but it seems they don't deal with fiber comms.