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submitted 1 week ago by [email protected] to c/[email protected]
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[-] [email protected] 15 points 6 days ago

Not very compareable systems. One covers the entire globe with satellites and another is just a fancy version of Wi-Fi. If you live somewhere remote you'd still need a bunch of masts within line of sight from eachother and if you're vanlifer or such then it's of no use.

I mean, cool technology but serves a bit different purpose. Especially in the edge cases.

[-] [email protected] 10 points 6 days ago

Hang on that's not a fair comparison. So you will need to deploy some masts to reach remote areas, got it.

Satellite internet then needs to fire a satellite into space to cover the area of which now there are thousands of then And the satellite has a shelf life and will eventually burn up in the atmosphere requiring repeated deployments.

Masts sounds easier.

[-] [email protected] 4 points 6 days ago

You need quite a bit of masts to cover the entire globe and that still doesn't work in places like in the middle of the ocean. Satellites most likely are easier to deploy and cheaper as well.

[-] [email protected] 2 points 6 days ago

I don't think this technology is intended to be used for global internet. But for giving access to a remote town, this is many magnitudes lesser in cost than a satellite.

A brief internet search tells me that a Starlink satellite is ~$1 million apiece, and lasts 5 years. With the additional cost of the launch the annual cost is ~$300,000 per year per satellite. You can work out the cost for 10 masts and tell me that its much cheaper.

From a consumer perspective, Starlink is amazing. Fast, relatively cheap, available anywhere. From a labour and material cost, its incredibly expensive. If a town can be serviced by cable, wireless, this new laser or whatever then the economical and environmental impact (in terms of materials) are a fraction.

Whilst masts will face the same prejudice as windmills for destroying landscapes, Starlink has already been causing issues with stargazing and night sky pollution. And this is only the first commercial venture for low-orbit internet. I can imagine there shall eventually be multiple of these setups, each with thousands of satellites (Starlink is at 7k+ now I think) which will only exacerbate the issues.

The point being, that having other technologies with overlapping abilities isn't a bad thing. Choice is good.

[-] [email protected] 3 points 6 days ago

and it requires line of sight which means it is hard to scale, will have issues with adverse climate and probably will need frequent realigments

[-] [email protected] 2 points 6 days ago

Imagine an autolock laser connection to the signal tower. Or autolock laser to a satellite in a vanlife.

[-] [email protected] 3 points 6 days ago

Then imagine clouds. Pigeons.

[-] [email protected] 3 points 6 days ago

The bandwidth of IPoAC is considerably lower, though.

[-] [email protected] 2 points 6 days ago

Imagine a rainbow on a cool spring day.

[-] [email protected] 2 points 6 days ago

Picture yourself in a boat on a river.

[-] [email protected] 15 points 1 week ago

Just lay fiber. Stop. Just lay fiber.

[-] [email protected] 4 points 6 days ago

Right? It seems like there's no reason to consider this niche solution except for crossing bodies of water as a last mile connection. Is there some shortage of fiber or just security concerns prompting all this investment?

[-] [email protected] 1 points 6 days ago

If South Dakota can do it then its possible anywhere

[-] [email protected] 10 points 6 days ago

Taara is Google, just saying.

[-] [email protected] 8 points 6 days ago

"has just broken free from Alphabet"

[-] [email protected] 65 points 1 week ago

The problem with laser communication is that it doesn't take much rain, snow or fog to block the signal.

[-] [email protected] 36 points 1 week ago

Similar “free-space optics” systems have been tested since the late 1990s, but past attempts were limited by weather conditions and fragile alignment systems. Taara claims its devices overcome many of those limitations with improved beam tracking and more resilient design.

They claim they’ve overcome that hurdle though, as per the article.

[-] [email protected] 29 points 1 week ago

Yes, but the article is literally nothing without that information.

The only interesting thing about a new approach to laser internet is if they've solved the critical issue holding it back.

[-] [email protected] 21 points 1 week ago* (last edited 1 week ago)

I wonder what they did, though. Because the article is omitting most of the interesting details and frames it as if this as if optical communication in itself was something new or disruptive... I mean if I read the Wikipedia article on Long-range optical wireless communication, it seems a bunch of companies have already invested 3 digit million sums into solving this exact issue...

[-] [email protected] 5 points 6 days ago

Well, most likely they'll never say what they did to solve it, assuming it is solved. That's how capitalism works. Everyone tries to keep innovation secret, so we have to invent the same thing dozens of times.

[-] [email protected] 2 points 6 days ago* (last edited 6 days ago)

Nah, all it takes is one person buying it, disassemble it and look at the mechanics to see whether there are things like motors and mirrors inside the transmitter to do new things like align it dynamically. And I mean the other things, physics, the atmosphere, lenses and near infraread lasers along with signal processing are well-understood. I think it won't be a big secret once it turns into a real thing... I mean as long as it's hype only it might be.

[-] [email protected] 2 points 6 days ago

Maybe, though processes and algorithms won't be copied easily legally. If they did some special coating to lenses or something, or if they have a really smart algorithm to correct for different effects, those are protected by law. You can examine it and try to replicate it, but you can't copy it.

[-] [email protected] 3 points 6 days ago* (last edited 6 days ago)

Sure. I think we're talking a bit about different things here. I didn't want to copy it, just know how it's done 😆 But yeah, you're right. And what you said has another benefit. If they want to protect it by law, we have a process for that: Patents. And those require to publish how it's done...

[-] [email protected] 12 points 1 week ago

Okay, photo taken (by Gabriele Barni) from 17.1177 km (claimed metric kilometers) straight distance to the buildings:
.

You can imagine how wobbly the image was.

How to compensate it? Wide, powerful beam? Gonna be blinded by an invisible light?

Quote from the video:

This is as simple as a digital camera with a laser pointer.

[-] [email protected] 19 points 1 week ago

claimed metric kilometers

As opposed to imperial, customary or nautical kilometres?

[-] [email protected] 8 points 1 week ago
[-] [email protected] 28 points 1 week ago

The company now operates in 12 countries and employs around 20 people.

That sounds like hard work.

[-] [email protected] 18 points 1 week ago

20 people are probably the executives and upper management. The 90% of the company is filled by contractors

[-] [email protected] 10 points 1 week ago

10 to 100 Times less reliable than WiFi

[-] [email protected] 5 points 1 week ago

Do you mean the tech that has existed since forever ago and that was replaced by microwaves?

[-] [email protected] -5 points 6 days ago

Asked cgpt to compare lasers to microwave for data transmission; take with a grain of salt, but seems transfer rate especially isn't comparable.


🔄 Comparison: Laser vs Microwave Data Transmission

📋 Comparison Table

Feature Laser Transmission (e.g., Taara) Microwave Transmission
Medium Free-space optical (light, like a fiber-optic cable without fiber) Radio/microwave frequencies (GHz range)
Wavelength ~780–1600 nm (near-infrared) ~1–100 GHz
Typical Data Rate 10–100 Gbps (Taara targets ~20 Gbps and higher) 100 Mbps – 1 Gbps (modern line-of-sight microwave)
Max Practical Range ~10–20 km, highly sensitive to weather ~30–50 km, more tolerant of weather
Line-of-Sight Requirement Yes, with tight beam alignment needed Yes, but more forgiving alignment
Weather Sensitivity High — fog, rain, dust degrade performance Moderate — heavy rain can attenuate signal
Latency Low Low
Power Usage Lower power for same data rate Slightly higher power use
Security High — narrow beam, hard to intercept Moderate — wider beam, easier to jam or intercept
Deployment Harder — requires precision mounting and stability Easier — flexible mounting, ruggedized equipment
Cost Higher upfront (optical gear, alignment systems) Lower per-unit, mature market
Use Cases High-throughput backhaul (rural, terrain-constrained areas) Medium-throughput links, often as telco backbone

📌 Key Insights

  • Bandwidth: Lasers have a much higher data capacity, similar to fiber optics. Microwave is far more limited in throughput.
  • Range: Microwave wins in raw distance, particularly in less-than-ideal weather. Lasers struggle with any visibility obstruction.
  • Stability: Lasers require precision alignment and environmental stability (wind, vibration can disrupt link). Microwaves are more forgiving.
  • Security: Lasers are harder to intercept due to their tight beams. Microwaves, being broader, are more vulnerable to eavesdropping and interference.

🧠 When to Use What

Use Laser Links (e.g., Taara) when:

  • You need fiber-like throughput without laying fiber
  • The link is short to medium range (under 20 km)
  • You can ensure clear line-of-sight and good weather conditions
  • You prioritize security and low interference

Use Microwave Transmission when:

  • You need a reliable, moderate-speed link over 30–50 km
  • Operating in all weather conditions is a must
  • You want easier setup with more flexibility in alignment
  • Budget constraints are tighter
[-] [email protected] 2 points 6 days ago* (last edited 6 days ago)

It is misrepresenting the facts quite a bit. I think microwave links might be able to do a bit more bandwidth. And laser can do way more than ChatGPT attributes to it. It can do 1 or 2.5 Gbps as well. The main thing about optics is that it comes without electromagnetic interference. And you don't need to have a fresnel zone without obstacles, and you don't need a license. The other things about laser being more susceptible to weather, etc should be about right. (And I don't know a lot about cost and alignment, so I don't really know if that's accurate and substancially more effort for lasers. They sure both cost some money and you have to point both at the receiver.)

[-] [email protected] 2 points 6 days ago

Sooooo... microwave is still better, got it.

this post was submitted on 27 May 2025
142 points (98.0% liked)

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