Private, scalable Dark Fiber solutions.
Take control of your network with secure, high-capacity Dark Fiber solutions from Fidium Business.
Dark Fiber networks: Custom fiber built for you.
Fidium’s Dark Fiber solution gives you complete control over your network infrastructure. With dedicated strands of unlit fiber, you choose the equipment and manage your traffic to support high-volume data transport, private connectivity or mission-critical redundancy.
Whether connecting campuses, data centers or aggregation points, Dark Fiber network solutions enable flexibility, security, and the ability to scale to virtually unlimited bandwidth.
Own your network. Control your capacity.
Unlimited Bandwidth
Eliminate network limits—scale with no cap.
Maximum Control
Achieve full transparency and independence from carriers.
Strategic Scalability
Build infrastructure that adapts as you grow.
Why choose Dark Fiber services from Fidium?
Fidium delivers private connectivity with room to grow.
Unlimitedcapacity
Dark Fiber solutions support virtually unlimited bandwidth based on the optical gear you choose to deploy.
67,000+Fiber route miles
Fidium’s expansive fiber network spans urban and rural areas.
250,000+on-net /near-net sites
Fidium’s dense fiber footprint enables fast connections to key regional and national destinations.
Future-proofinfrastructure
Scale without limits—your Dark Fiber network evolves with your needs as technology and data demands grow.
Who uses Dark Fiber?
Fidium Dark Fiber services support industries with advanced, high-bandwidth networking needs:
Getting started with Dark Fiber services.
We make private networking simple.
Consult
We assess your use case, location needs, and technical preferences.
Design
Our team maps fiber routes and delivery options.
Deploy
Fiber is lit at your direction using your equipment.
Explore more transport options.
Build secure, scalable infrastructure by combining Dark Fiber with Wavelengths and Data Center connectivity.
Have questions about Dark Fiber services? We’ve got answers.
What’s the difference between Dark Fiber and lit services like Wavelengths?
Dark Fiber gives you physical fiber strands that you control completely—including the electronics. Lit services like Wavelengths include transport equipment and are managed by Fidium.
Can I scale my bandwidth needs over time with Dark Fiber?
Yes. With Dark Fiber, bandwidth is only limited by the optics and gear you deploy.
Is Dark Fiber secure?
Absolutely. No shared traffic or overlay protocols—only your team controls what travels across your fiber.
What is Dark Fiber used for?
Dark Fiber solutions are used to connect data centers, campuses, or large facilities where privacy, performance, and scalability are critical.
What kind of businesses are best suited for Dark Fiber?
Dark Fiber is ideal for organizations with in-house IT teams that require full control over their network infrastructure. It’s especially valuable for industries with high security demands (like government or finance), applications requiring massive bandwidth (such as AI, imaging, and data backups), or companies planning for long-term scalability and performance.
Choose the right transport solution for your needs.
Use this guide to evaluate Fidium’s networking and transport options based on use case, performance, control and scalability.
| Wavelengths (DWDM) | Ethernet (Switched) | MPLS-VPN | Dark Fiber | |
| Use Case Fit | Data center interconnects, backbone, cloud access | Multi-site L2 networking, DIA alternative, aggregation | Multi-site app & voice data, WAN routing, branch links | Full network control |
| Ideal For | Hyperscalers, AI, cloud, high-throughput apps | SMBs, enterprises | Enterprise WANs | Network architects, carriers |
| Bandwidth Options | 10Gbps, 100Gbps or 400Gbps | Up to 100Gbps | Up to 100Gbps | Unlimited (customer defined) |
| Connection Type | Dedicated point-to-point | Layer 2 P2P or multipoint | Layer 3 any-to-any | Customer-controlled fiber |
| Security | High (private wavelength) | High | High | Maximum (private physical path) |
| Latency | Ultra-low | Moderate | Moderate (depends on routing) | Lowest |
| Management | Carrier-managed | Carrier-managed | Carrier-managed | Customer-managed, requires in-house optical gear & expertise |