# Damnang’s Substack

Welcome to my Substack.

Here, I share in depth analysis of semiconductor technology, companies, and industry trends in a way that is still easy for non specialists to follow.

I hope you gain many valuable insights along the way.

Over 11,000 subscribers

## Optics

Deep analysis of silicon photonics, CPO, lasers, optical interconnects, transceivers, test bottlenecks, and the companies shaping the next era of AI infrastructure.

### LATEST

#### [The Market Doesn’t Know CPO Yet](https://damnang2.substack.com/p/the-market-doesnt-know-cpo-yet)  
[A blueprint for the second phase of the optics trade, drawn from the ground in Silicon Valley]  
Jun 6 • [Damnang](https://substack.com/@damnang)

#### [MicroLED: The Optical Technology All Three Memory Makers Are Watching](https://damnang2.substack.com/p/microled-the-optical-technology-all)  
[When Memory Meets Optics]  
Jun 4 • [Damnang](https://substack.com/@damnang)

#### [Why You Should Be Watching Optical Test Right Now](https://damnang2.substack.com/p/why-you-should-be-watching-optical)  
[Who Makes Money First Across 5 Bottlenecks]  
May 3 • [Damnang](https://substack.com/@damnang)

#### [Optical Investment Map Stock Review: Who Moved and Who's Next?](https://damnang2.substack.com/p/optical-investment-map-stock-review)  
[From Static Map to Dynamic Strategy]  
May 1 • [Damnang](https://substack.com/@damnang)

#### [The Real Bottleneck in the Optical Interconnect Cycle Is InP](https://damnang2.substack.com/p/the-real-bottleneck-in-the-optical-886)  
[AI infrastructure's next round, and what the market hasn't priced in yet]  
Apr 22 • [Damnang](https://substack.com/@damnang)

#### [Damnang's Optical Investment Map v1.0](https://damnang2.substack.com/p/damnangs-optical-investment-map-v10)  
[Dissecting the Full Structure of Optical Investing Across 7 Layers and 50 Tickers]  
Apr 19 • [Damnang](https://substack.com/@damnang)

#### [Citron Sees the Valuation, but Misses the Technology](https://damnang2.substack.com/p/citron-sees-the-valuation-but-misses)  
[A Technical Rebuttal to the AAOI Short Report]  
Apr 11 • [Damnang](https://substack.com/@damnang)

#### [Everything You Need to Know About CPO Testing](https://damnang2.substack.com/p/everything-you-need-to-know-about)  
[A Complete Breakdown of the Test Value Chain Every CPO Investor Must Understand]  
Apr 7 • [Damnang](https://substack.com/@damnang)

See all