Because VCSELs emit from the top surface of the chip, they can be tested on-wafer, before they are cleaved into individual devices. This reduces the cost of the devices. It also allows VCSELs to be built not only in one-dimensional, but also in two-dimensional arrays. The larger output aperture of VCSELs, compared to most edge-emitting lasers, produces a lower divergence angle of the output beam, and makes possible high coupling efficiency with optical fibers.
As the industry looks ahead, six major trends are shaping the future of fiber deployment—from smarter buildouts and next-gen cables to workforce training and quantum-driven innovation. Federal funding to bring broadband to unserved areas is also expected to drive expansion. The importance of fiber optic technology in our daily lives cannot be overstated. 5%) are now serviceable by fiber—an increase of 13% in 2024. Did you know that data in 2025 can travel across a hollow-core fiber at nearly the speed of light, shaving milliseconds off global communications? If you've ever cursed your buffering video or waited too long. From hollow-core fiber to AI-driven network optimization, these innovations are setting the stage for the next generation of ultra-fast, scalable infrastructure.