Hey, sorry for the slow response. Feel free to appoint me as a mod until someone else wants to fully take over so that you don’t feel pressured to hold that spot for longer

Yes, there is a lot of potential. There are micro-spectrometers available covering this range, like the MEMS-FPI type spectrometer or the multi-pixel arrays with filters (example: https://www.mantispectra.com/products). But this new kind of detector seems to come with higher resolution, faster readout than the MEMS-FPI, and more sensitivity. It is quite exciting, I’m curious to see if they commercialize it soon.

I am not 100% sure, but I think that the designer bears the cost of the wafer yield.

The PDK is specific to the manufacturer, and I imagine that the risk associated with specific features is known and the yield range can be estimated. A design with more and riskier the features would lower the expected yield, and it makes sense that this risk gets passed onto the designer. The contract may have some protections for the case when the yield is significantly lower than expected because of the manufacturer’s fault. Just a guess though, it would be great if someone with real experience can answer.

Very cool!

I also like that they included a device cost analysis. I think they used some aggressively optimistic assumptions (100% yield from the wafer) and large-volume procurement prices that I am skeptical of, but if true it is valuable info.

Thanks!

The way submitters didn’t played by the rules

It is not that the submitters did not play by the rules. The ‘rules’ of the instance set the scope of the kind of communities that belong here, but I would not expect users from other instances to be aware of these rules. So, it was a mistake on my end not on any poster’s. It would have been better to react sooner, but better now than later.

There are ways this community could have been both science

From the name my impression was that the community was about more aligned with futuristic sci-fi, which would be a bit on the edge of the scope but acceptable.

That’s awesome!! Are they in a terrarium or outside?

You can have a look at some communities that often have content where science intersects politics:

https://mander.xyz/c/academia https://mander.xyz/c/earthscience https://mander.xyz/c/publichealth

Minimizing politics does not strictly mean being extreme about enforcing the no-politics rule. Posts that are about the interaction between politics and science generally contain enough overlap with science that it is acceptable. But that is not the case in this community, it is mostly general topics and politics.

Haha, thanks but no worries, the wound will heal 😁

The instance has had this policy for over 4 years. The sidebar reads:

The main focus of this instance is the natural sciences, and the scope encompasses all of the STEM fields.

Please keep politics to a minimum. When science is the focus, intersection with politics may be tolerated as long as the discussion is constructive and science remains the focus. As a general rule, political content posted directly to the instance’s local communities is discouraged and may be removed. You can of course engage in political discussions in non-local communities.

The goal when creating this instance was to a place to discuss about scientific discoveries, post pictures of nature, and have a set of communities for this while avoiding polarizing content. If someone wants to discuss politics they can click on ‘All’ and go right to it. The scope is explicitly anti-politics because I do not want to moderate a politically charged or polarizing environment, and I know that many people with interests like mine will also appreciate such a space existing because they see enough pictures of Donald Trump and polarizing discussions elsewhere.

y’all are a science community and science is being hunted down and destroyed systematically and your response is to try to become less political?

I do not disagree with you broadly, and that is to an extent why I use common sense and do not enforce the “no politics” rule religiously. There is quite a bit politics that gets through. Although I do prefer to offer users of this instance a politics free experience, if no one complains I usually let it go.

In this case: I have noticed posts in the front page that have nothing to do with science lately, and they came from this specific community. I then saw some US politics characters attached to articles that had nothing to do with science. I looked through the community and most of it is off-topic, so it makes more sense to lock the community.

I’m sorry this upsets you, I should have removed the community as soon as it was created, but I did not realize what it was.

Ok! done

Oooh, you are right! I actually did not know I had that toggle available. Thank you 😅

thanks :D

This is a general chat community for the instance. From my side (admin) I would draw the line at being mean, polarizing for no good reason, or dangerous. The community creator (@fossilesque) would decide how to handle more specific moderation points, but I don’t see an issue with chatting about science.

That said, I also created a community that is more specifically about general thoughts about science without needing to worry about ‘quality’: https://mander.xyz/c/thought_forge

Nice!

You may have disabled the visibility of bot accounts in your user settings

If you are looking for eye bio mods you might also like this one: https://www.sciencedirect.com/science/article/pii/S0092867419301011

Not yet, unfortunately… But knowing more about what might be happening in the brain to cause it increases the probability that a cure will be found.

Sorry, I missed this! But I think that this is due to bots. From time to time, bots attempt to scrape the instance and this makes the site a lot less responsive.

I try to manually block these IPs, but sometimes new IP ranges show up.

In photonic integrated circuits, laser light enters some input port(s) and then travels through optical “wires” called waveguides that are arranged in ways that manipulate the light before it is finally detected using photodiodes.

In this paper, the main idea can be understood from Fig. 1a. A single pump laser with frequency νp enters a straight waveguide, but it is also coupled into three small loops called microring resonators, and there is an output port at the bottom right.

These rings are resonators because certain wavelengths of light can circulate around the loop constructively. In other words, after going around the ring once, the wave comes back in phase with itself and reinforces itself. The rings also have tiny heaters (resistive electrical wires) attached to them, allowing their resonances to be tuned slightly by changing the temperature.

What they show is that, using only one pump laser and careful tuning of the rings, the system can generate additional frequencies besides the original pump frequency.

This relies on nonlinear optics. In ordinary linear optics, the material response follows the electric field linearly, so light mostly stays at the same frequency. But in nonlinear materials, the response depends on the field strength itself, allowing the pump light to generate additional frequencies (“colors”) through nonlinear interactions.

A lot of the terminology in the paper like Kerr effects, χ(3) nonlinearity, four-wave mixing, parametric gain, idler frequencies, and cross-phase modulation, refers to different aspects of these nonlinear interactions.

The end result is that this optical component can generate multiple sets frequencies from a single input laser using these coupled nonlinear resonators.

Wow! Never seen this one before. It’s amazing!