March 2025 Issue
Feature Articles
Functional Fibers Redefine Wearables
Fiber-based technology is paving the way for next-generation clothing and devices.
by Zhixun Wang and Lei WeiCoherent Optics Grows Older and Goes Shorter
Coherent optical communications, which support and enable the global internet infrastructure, are moving into hyperscale data centers.
by Brandon BuscainoThe Light at the End of the Tunnel
Recent innovations in hollow-core fiber are enabling this emerging technology to challenge the dominance of traditional glass fiber.
by Susan CurtisDepartments and Columns
PlanOpSim: Meta-Optics Comes of Age
As metasurface technologies have advanced, so has this Belgian startup specializing in metasurface simulation software and design.
Optical Communications Readies for Launch
MIT Lincoln Laboratory’s Bryan S. Robinson will speak at the upcoming OFC conference about challenges and next steps for free-space optical communications.
Also in this Issue
30, 20 and 10 Years Ago in OPN
Laser fusion; optical data storage; reconfigurable optics.
National Medal of Tech and Innovation / New editors-in-chief / Global Advanced Manufacturing Alliance / Online industry meeting: Quantum comms / Optica Ambassadors / Wyant College Winter School / Deutsch Fellow / Shaw is Alum of the Year / Student researchers in India / Thank you, editors and representatives

![Manual probe system with needles for test of semiconductor on silicon wafer. [A. Morozov / Getty]](https://opnmedia.blob.core.windows.net/$web/opn/media/images/articles/2025/1125/departments/202511-cover-web.jpg?ext=.jpg)
![Researcher Clara Saraceno in the lab. [Image by Carsten Behler Photography]](https://opnmedia.blob.core.windows.net/$web/opn/media/images/articles/2025/1025/departments/202510-cover-web.jpg?ext=.jpg)