Re: Light powered chip makes AI 100 times more efficient

Sep 09, 2025 Last reply: 10 months ago 15 Replies


Light-powered chip makes AI 100 times more efficient


> Researchers have developed a silicon chip that uses light with electricity to perform convolution operations for AI, dramatically reducing energy use and increasing speed.
> Date:
> September 9, 2025
> Source:
> SPIE--International Society for Optics and Photonics
> Summary:
> Artificial intelligence is consuming enormous amounts of energy, but researchers at the University of Florida have built a chip that could change everything by using light instead of electricity for a core AI function. By etching microscopic lenses directly onto silicon, they’ve enabled laser-powered computations that cut power use dramatically while maintaining near-perfect accuracy.
>
> Link:
>
formatting link
> quote:
> "The chip is designed to carry out convolution operations,
> a core function in machine learning that enables AI systems to detect patterns in images, video, and text.
> "

The subject line should have been "light powered chip might make AI 100 times more efficient".


It's a publicity puff for some university research, and getting an idea which look good to a university researcher into a state where you can manufacture millions of them reliably is a long and expensive process, if you can make it work at all, and you do have to make it work reliably before you can sell many of them.

Yes, but the taper must not be too good an impedance match. If it was perfect there would be no reflection and no resonance. Sound is quite non-linear in many brass instruments. Shock waves can be visualised close to the horn of a trombone.

formatting link

Etching microscopic lenses directly onto silicon isn't exactly standard semi-conductor manufacturing. And you etch into silicon - etching is a subtractive process. Depositing lenses onto silicon is a somewhat different actvity.

Fluently. But it just says that ASML is investing in a French AI-business. Nothing about why they have chosen to invest in that particular business.

Your translation is bit sloppy, but since there's no useful content to translate, who cares.

<snip>

< Fedora Atheist rant snipped >

Thank you for your translation. As you say, "It is silicon tech, so it should not be that hard." Here's an excerpt from one of my undergrad EE papers written about a quarter of a century ago:

You can use surface micromachining to create both refractive and diffractive lenses. In the case of refractive lenses, you can build either fresnel or multiple-binary lenses by depositing planar layers on a substrate, creating a microhinge at one end, and tilting the resulting lense through an angle of 90 degrees, which makes the optical axis parallel to the substrate. Today's technology makes this a relatively easy fabrication process, but the downside is that these lenses are limited to an efficiency of 10%. You can increase the efficiency of multiple-binary lenses by using more layers, but more layers complicate the fabrication process.

It sounds like it convolves some realtime input against a pattern that is fabricated into the chip.

If so, it's silly.

Goofy press releases like this come out many times per day.

Well, please stay away. We have far too many european tourists already.

They used to stay downtown and go to Fishermans Wharf and Alcatraz, the junky tourist stuff, but lately they are spreading out, hiking our canyons and crowding our little neighborhood dumpling joints and buying up our best sourdough bread and talking funny. Attending goofy AI conventions.

We're up to close to 30 tourists per year per resident. It's getting like Venice. You can't walk outside without bumping into a fat German.

[...]

I have noticed an increase in the number of Dutch-registered cars driving around South-west England this Summer. I asked one of the visitors why there were so many and she told me they come to see the hills.

[...]

I felt like that when I caught a bus in Birmingham (UK) for the first time, many years ago. They were speaking English (apparently) but with a completely incomprehensible Birmingham accent. On that occasion I was the immigrant and they were the natives.

In Holland(*) they put rocks in museums. On the other hand, they do mud really well.

Cheers

Phil Hobbs (*) Yes, Bill, I know that Holland isn’t the whole Netherworld, I mean Netherlands. Tell it to their tourist bureau.

Am 10.09.25 um 16:27 schrieb john larkin:

obesity...

.. and Germany and some other countries, too. (I did this & that for Airbus in Ulm, innards for the Eurohawk drone and other radars..)

That problem has been solved by DT, the whining is already starting.

<
formatting link
>

or

<
formatting link
>

There is not too much else to see, I was there in 2005 for a technology transfer from Infineon fiber optics to Finisar in SC, nearly 1 month (10 GB/s XFP transceivers). The writing was already on the wall back then, that could not go on forever in this style, also in the shops.

<
formatting link
>

If that picture was not a menetekel! But the seals were really sweet.

... only if there is no French or German bakery!

When I was a student in Berlin, there were always queues of fat US citizens and sporty Japanese, buying stamps in the post office for their Heidelberg and Neuschwanstein post cards :-)

Gerhard

When I was a kid in New Orleans we had a geology class where they talked about where rocks come from. We never believed it. Rocks come down the river on barges from rock factories.

The highest point around was near my house. Monkey Hill, 12 feet.

[...]

Birmingham is only 80 miles from where I live, if you go another 80 miles North you encounter a Liverpool accent, which is utterly different and equally incomprehensible. if you go 80 miles West you encounter Welsh, which is a different language altogether - and even English spoken with a strong Welsh accent is extremely difficult to follow.

And sand, lots of sand everywhere. Where I lived, forgotten WW2-era bunkers would occasionally be uncovered by moving sand dunes, only to be covered again a short while later.

Jeroen Belleman

Most people around here are pretty fit.

We do have a lot of non-european folks, like black and especially Pacific Islanders, who are obese. My theory is that they are not genetically adapted to the western diet of unlimited cheesecake and ice cream and smashburgers.

And I think that colder climates fatten people up, for several reasons, which is why other parts of the USA are chubbier than California.

The hills and the coast are spectacular, but you've got to get away from the hotels and tourist junk and the convention center.

I'm about due for my afternoon walk in Glen Canyon.

We have fabulous pastries too. Destination Baking is dangerously close, just across the street. That relates to the obesity thing.

Yes, Muir Woods. I have also seen some Redwoods near Stuttgart, .de Somehow, they did not fit there. And my very first boss planted one in his garden some 50 years ago.

saguaros in Arizona, plains in the central

BTDT, but we gave up abt. a day's march before we reached the Everest base camp because it was f* cold. Good idea. I like it warm & the base camp is a huge waste dump; only interesting if you have paid your $60K for the climbing permit, plus the travel agency. But the sherpas will carry you to the summit if needed. Read Jon Krakauer's book "Into Thin Air". Shocking. The behaviour of some climbers can only be explained by brain malfunction from repeated previous exposure to oxygen undersupply.

There is the Everest View hotel at abt. 4000m height. It has a helicopter pad but flying in from Kathmandu is not a good idea.

I saw a Japanese man collapse after a stair with 3 steps. Really taking your holidays is considered an insult to your boss, so they fly from work@Tokio to KTM, then from KTM-->Everest view hotel by helicopter.

We flew to Lukla STOL airport, the landing there is an adventure for itself. Google is your friend. I was a glider pilot and so was my GF, we are used to the fact that there is no retry for landings. Nevertheless... We walked then a week to the EV Hotel via Namche Bazaar.

We were a few days early on the way back which was good. In Lukla, there may be a week of fog, so no flights. Then there accumulate 300 mountaineers who are in an explosive mood because their flight tickets to US or Europe just turn void b/c of no show.

We found that situation but could simply walk down to the street where the busses go. That took a week or so. By *far* the most interesting part of the journey. The Everest is just a big pile of stones, so what?

It is forbidden to ride on the roof of a bus but that does not stop the government-owned bus company sells tickets. Roof tickets were still available. It feels funny to look down from the roof and next to the bus is only air until the whitewater river 300 m deep below. Just hold that "safety" rope carefully.

There was wild cannabis indica next to the road. And bananas, and rice.

Gerhard

Then I would propose the Amai Dablang, maybe 15 miles away from the Everest. For me, the most beautiful mountain. When I was there, it was forbidden to climb because it was the home of a goddess that could settle all arguments. It seems, $$$ has changed that in the meantime.

We could ask her to visit s.e.d. to end those endless ad hominem attacks.

BTW, I just happened to stumble across this about the Everest situation: (John Oliver)

<
formatting link
>

Gerhard

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required