I am curious how quickly those per lane speeds can realistically improve without eroding the power advantage. How do you see thermal effects influencing linewidth stability in real datacenter conditions, especially for microLED arrays operating at scale, and does that shift the balance when comparing them to DFB lasers over sustained workloads?
Really need to dig deeper into thermal issues with microLEDs and how they compare to lasers (deep dive idea). A superficial look seems to indicate that LEDs are more stable, and lasers need to be pushed hard to push speeds at 1.6T and above. This makes cooling a major factor for laser based interconnects
Hollow core fiber has orders of magnitude less dispersion. How fast can microLEDs switch if dispersion is not the limit? Similar question applies to VCSELs, which have wider band than DFB lasers but much better than LED. Is there a potential for hollow fiber to rewrite the rules in a data center? The direct modulation of LED and VCSEL makes them very efficient, and hollow fiber is now made in 30km lengths so manufacturing volume may be ready to scale to meet data center scenarios.
Probably another really important point to check is the reliability and lifetime of these uLED. One of the advantages of ELSFPs is that they are pluggable and can be replaced at any time when a laser fails. That wouldn't be the case for uLED I think.
I think its a hedge that is worth it. They acquired hyperlume just for this, and they want to make sure they are at the right spot if power becomes an issue in optical scale up with lasers.
Human health has been profoundly transformed over the past century, largely due to scientific progress and international collaboration. The global maternal mortality rate has fallen by more than 40% since 2000, and deaths among children under five have been reduced by over 50%. Advances in technology, scientific knowledge and skills, and collaboration between different disciplines, sectors and countries continue to turn once-life-threatening health challenges – such as elevated blood pressure, cancer diagnoses or HIV infection – into manageable health issues, extending and improving lives worldwide.
“Yet, health threats continue to grow, fuelled by climate impacts, environmental degradation, geopolitical tensions and shifting demographics. These challenges include persistent diseases and strained health systems as well as emerging diseases with epidemic or pandemic potential. Across the globe, thousands of scientists – together with organizations such as WHO – are accelerating research and developing policies, tools and innovations needed to protect communities today and safeguard the health of future generations.
“Science is one of humanity’s most powerful tools for protecting and improving health,” “People in every country live longer and healthier lives on average today than their ancestors did, thanks to the power of science. Vaccines, penicillin, germ theory, MRI machines and the mapping of the human genome are just some of the achievements that science has delivered that have saved lives and transformed health for billions of people.”
WHO has been coming through and saving life for 78yrs and still counting..
I am curious how quickly those per lane speeds can realistically improve without eroding the power advantage. How do you see thermal effects influencing linewidth stability in real datacenter conditions, especially for microLED arrays operating at scale, and does that shift the balance when comparing them to DFB lasers over sustained workloads?
Really need to dig deeper into thermal issues with microLEDs and how they compare to lasers (deep dive idea). A superficial look seems to indicate that LEDs are more stable, and lasers need to be pushed hard to push speeds at 1.6T and above. This makes cooling a major factor for laser based interconnects
Hollow core fiber has orders of magnitude less dispersion. How fast can microLEDs switch if dispersion is not the limit? Similar question applies to VCSELs, which have wider band than DFB lasers but much better than LED. Is there a potential for hollow fiber to rewrite the rules in a data center? The direct modulation of LED and VCSEL makes them very efficient, and hollow fiber is now made in 30km lengths so manufacturing volume may be ready to scale to meet data center scenarios.
Thanks Tanj, good point. Low dispersion will definitely extend reach, but data rate eventually be limited by line width
Conversely, lower dispersion will allow higher data rates at the same reach.
Probably another really important point to check is the reliability and lifetime of these uLED. One of the advantages of ELSFPs is that they are pluggable and can be replaced at any time when a laser fails. That wouldn't be the case for uLED I think.
The uLEDs would be in a pluggable transceiver. I supposed it can be replaced too?
In that case makes sense. I thought it was targetting a CPO approach for Scale up
What do you think about Credo's confidence in ALCs being their answer vs opticals?
I think its a hedge that is worth it. They acquired hyperlume just for this, and they want to make sure they are at the right spot if power becomes an issue in optical scale up with lasers.
Who are now the main microLED producers? Do they require InP or other strategic materials?
I haven't looked at the whole supply chain yet, but that is a good question.
MicroLEDs required GaN, not InP -- which is a positive from a supply chain perspective.
Thanks!
What's your opinion on Perkinamine? Isn't it an 'InP demand killer'?
Human health has been profoundly transformed over the past century, largely due to scientific progress and international collaboration. The global maternal mortality rate has fallen by more than 40% since 2000, and deaths among children under five have been reduced by over 50%. Advances in technology, scientific knowledge and skills, and collaboration between different disciplines, sectors and countries continue to turn once-life-threatening health challenges – such as elevated blood pressure, cancer diagnoses or HIV infection – into manageable health issues, extending and improving lives worldwide.
“Yet, health threats continue to grow, fuelled by climate impacts, environmental degradation, geopolitical tensions and shifting demographics. These challenges include persistent diseases and strained health systems as well as emerging diseases with epidemic or pandemic potential. Across the globe, thousands of scientists – together with organizations such as WHO – are accelerating research and developing policies, tools and innovations needed to protect communities today and safeguard the health of future generations.
“Science is one of humanity’s most powerful tools for protecting and improving health,” “People in every country live longer and healthier lives on average today than their ancestors did, thanks to the power of science. Vaccines, penicillin, germ theory, MRI machines and the mapping of the human genome are just some of the achievements that science has delivered that have saved lives and transformed health for billions of people.”
WHO has been coming through and saving life for 78yrs and still counting..