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227

Swedish amplifier enables transmission of 10x more data per second (interestingengineering.com)

submitted 1 week ago by [email protected] to c/[email protected]

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[–] [email protected] 13 points 1 week ago (2 children)

I totally get how this would be useful in imaging systems, but I'm not understanding how it applies to communications.

The only thing I can think is perhaps carrying more modes through a multimode fiber? I never understood amplifier bandwidth to be a limiting factor, though.

What communications systems use a wide bandwidth of light (300nm is a LOT) into a single amplifier?

[–] [email protected] 4 points 1 week ago (1 children)

That's a great question. My guess is the bandwidth comes from bonding those extra modes and from the lower signal-noise ratio. That lower SNR means they could modulate with more sensitive but faster modes.

[–] [email protected] 2 points 1 week ago

I wanna know if I can plug my guitar into it

[–] [email protected] 1 points 1 week ago

In terms of industrial applications, the abstract states

We have realized all-optical wavelength conversion for a more than 200-nm-wide wavelength span at 100 Gbit s−1 without amplifying the signal and idler waves. As the 32-GBd 16-QAM is the dominant modulation format of current optical-fibre communication systems connecting the continents on Earth, the Si3N4-chip high-efficiency wavelength conversion demonstrated has a bright future in the all-optical reconfiguration of global WDM optical networks by unlocking transmission beyond the C and L bands of optical fibres and increasing the capacity of optical neuromorphic computing for artificial intelligence.

https://www.nature.com/articles/s41586-025-08824-3