Who made the graphic?
jlh
joined 2 years 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.
From the abstract: "we obtained a continuous-wave gain bandwidth of 330 nm in the near-infrared regime. [...] Furthermore, we realized wide all-optical wavelength conversion of single-wavelength signals beyond 100 Gbit s−1 without amplifying the signal and idler wave."
Here is the paper: https://www.nature.com/articles/s41586-025-08824-3
I think figure 4 from the PDF shows it the best. Their amplifier covers 1400 nm to 1700 nm infrared lasers.
Yes, but natural gas is a more potent greenhouse gas than co2 and there are continuous natural gas leaks. All the CO2 savings (vs coal) from each KwH of burned natural gas is completely negated by all the leaks on the way to the consumer. Note that most oil companies are very bad at reporting leaks, we basically have to measure them manually from satellites to know about them.
Never said electrification was a bad thing, just natural gas. Instead of building new natural gas plants and patting ourselves on the back for it not being coal, we should just build more renewables.
Natural gas electricity contributes more greenhouse gasses per kwh than coal though. The PRC also has lower co2 emissions per capita.
PHP does actually scale better than something like Lemmy which is written in rust
But sure, you can act like you know more than the Nextcloud devs
Isn't Opencloud just extended Nextcloud? (Still PHP)
Also, nextcloud core components are written in Rust, the PHP just handles incoming requests.
https://nextcloud.com/blog/nextcloud-faster-than-ever-introducing-files-high-performance-back-end/
35% Tarriffs on eu/Asia and 104% Tarriffs on China is still a recession. Other countries arent removing their Tarriffs
The only positive thing this did was show that Trump is weak, so hopefully he'll stay at these rates and maybe he'll be out by the end of the year
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.
Tell Russia that, the EU never turned them off or stopped ordering. It was Russia who turned them off to try to bully the EU.
yeah, I guess tvs and receivers would come with active optical cables to make it simpler, but the main thing is that optical is much cheaper and faster than copper once you get the economies of scale down on the transceivers. 1 terabit over 100km, down a cable thinner than a USB cable, is no problem with the right lasers. Meanwhile, I have interference and patent issues at 0.02tbps on hdmi cables less than a meter long.
Plenty of cheap optical HDMI cables out there, but they have compatibility issues. It would be so much easier with standard mmf mpo or SMF lc cables.
apalrd did review a unique product recently that embeds a mmf transceiver into the existing HDMI for factor, though.
Seems like a good way to do it.
Keep in mind Kopia has some weirdness when it comes to transferring repos between filesystem and S3, so you'd probably want to only keep one repo.
https://kopia.discourse.group/t/exported-s3-storage-backup/3560
Backblaze B2 is a cheap S3 provider. Hetzner storage box is even cheaper, but it doesn't support S3 natively, so you're likely to run into issues with the kopia repo compatibility I mentioned.