Dark Fiber Network Market Explained: Technologies, Applications and Opportunities Through 2034 The Dark Fiber Network Market covers unlit optical fiber that carriers and businesses lease or buy with long-term usage rights and then activate with their own equipment. Polaris Market Research valued it at USD 6.81 billion in 2025 and projects USD 25.55 billion by 2034, a 15.8% CAGR from 2026 to...