Quintessent, a startup making optical interconnects for data centers, raised a $40M Series A led by Cycle Capital, following its $11.4M seed round in 2024 (Maria Deutscher/SiliconANGLE)

<a href="https://siliconangle.com/2026/08/24/quintessent-bags-40m-to-develop-lasers-for-ai-clusters/"><img align="RIGHT" border="0" hspace="4" src="http://www.techmeme.com/260824/i38.jpg" vspace="4" /></a> <p><a href="https://www.techmeme.com/260824/p38#a260824p38" title="Techmeme permalink"><img height="12" src="http://www.techmeme.com/img/pml.png" style="border: none; padding: 0; margin: 0;" width="11" /></a> Maria Deutscher / <a href="http://siliconangle.com/">SiliconANGLE</a>:<br /> <span style="font-size: 1.3em;"><b><a href="https://siliconangle.com/2026/08/24/quintessent-bags-40m-to-develop-lasers-for-ai-clusters/">Quintessent, a startup making optical interconnects for data centers, raised a $40M Series A led by Cycle Capital, following its $11.4M seed round in 2024</a></b></span>&nbsp; &mdash;&nbsp; Optical interconnect startup Quintessent Inc. today announced that it has raised $40 million in funding to ramp up production of its hardware.</p>