Share this article Share this article ResearchAndMarkets.com's offering. The global dark fiber market is projected to reach USD 8.7 billion by 2026 from an estimated USD 5.2 billion in 2021, at a CAGR of 11% from 2021 to 2026. Rising demand for 5G networks and increasing demand for internet bandwidth is among the factors driving the growth of the dark fiber market. Single mode fiber segment held the major share of dark fiber market Based on type, the single mode fiber segment is estimated to hold a larger share of the dark fiber market compared to the multimode fiber segment in 2021, and this segment will continue to hold a dominant market position during the forecast period. Single mode fibers are best suited for longer transmission distances, such as multi-channel television broadcast systems and long-distance telephony.