Fiber optic drone
AI Analysis
Fiber optic drones, utilizing a physical cable for control and data transmission, have emerged in the Russo-Ukrainian war and were subsequently used by Hezbollah, offering immunity to traditional jamming techniques. Ukraine has developed a low-tech but effective countermeasure using rotating barbed wire to sever the fiber optic cable. The technology presents a new challenge for air defense and raises environmental concerns due to plastic cable waste.
Key Takeaways
- Fiber optic drones offer immunity to jamming and improved data rates compared to radio-controlled drones.
- Russia initially fielded fiber optic drones in Spring 2024, followed by Ukraine; ranges have increased to over 19km.
- Hezbollah employed fiber optic drones during the 2026 Lebanon war.
- Ukrainian forces are countering these drones with rotating barbed wire to physically disrupt the fiber optic cable.
- The fiber optic cables pose an emerging environmental hazard due to their synthetic polymer composition.
Why It Matters
The proliferation of fiber optic drones represents a significant shift in drone warfare, bypassing reliance on the electromagnetic spectrum and rendering many existing counter-UAS systems ineffective. This necessitates the development of new, physically-based countermeasures and a reassessment of air defense strategies. The environmental impact of discarded cables is a secondary, but growing, concern.
Fiber optic drone
Ukrainian FPV drone unspooling the fiber optic cable. Ukrainian FPV drone with fiber-optic communication channel
A fiber optic drone is an unmanned aerial vehicle(UAV), usually a first-person view (FPV) loitering munition, which uses an optical fiber as its primary guidance and teleoperation link. These drones usually have fiber optic cables between 5 and 20 km (3.1 and 12.4 mi) long, although prototypes with up to 50 km (31 mi) range have been developed. They are impossible for defence forces to jam and very difficult to detect.
History
In the early 2000’s, US military research agency DARPA developed an idea for a loitering munition controlled by fiber-optic cable under the Close Combat Lethal Recon program, but it was never fielded.
During the Russo-Ukrainian war both Ukraine and Russia rely on electronic warfare to defeat radio-controlled FPV drones. Jammers are used on trenches and vehicles. Pocket-size jammers for soldiers were also developed.
Fiber optic FPV drones were first fielded by Russia in the spring of 2024 and by Ukraine soon after. Maximum strike ranges have increased over time, with Russian fiber optic drones hitting areas of Kramatorsk more than 19 kilometres behind the front lines in October 2025.
Lebanese armed group Hezbollah used fiber optic drones in the 2026 Lebanon war as part of the Hezbollah–Israel conflict.
Characteristics
Advantages
- Immunity to jamming.
- Higher data rates from the drone, even from locations where radio contact is poor, and the signal doesn't reveal operator's or drone's location by radio direction finding.
- Needs less power to communicate, and so can be used to idle on the ground for ambushes.
Disadvantages
- Reduced range, payload and maneuverability compared to wireless drones.
- The fiber-optic cord can get tangled or even broken off.
Countermeasures
To counter fiber-optic drones, as of 2025, Ukrainian soldiers deploy lines of stretched barbed wire, with a battery-driven motor that makes the barbed wire rotate around its axis. This has the effect of entangling and breaking the thin fiber-optic wire laid on the ground by fiber-optic drones along their flight path.
Environmental concerns
The long trails of fiber optic cable left behind the drones on the battlefield may be a significant source of plastic pollution because most of the cables are made from synthetic polymers such as poly(methyl methacrylate) and fluoropolymers.
See also
- Wire-guided missile
- Ushkuynik KVN
References
- Hambling, David (6 June 2025)."Fiber Optic Bird's Nest Heralds A Fiber Drone Summer In Ukraine". Forbes. Retrieved 2025-06-06.
- "Israel to expand use of fiber-optic guided drones". Globes. 2024-11-19. Retrieved 2025-06-04.
- Hambling, David (8 March 2024)."Russian Fiber Optic Drone Beats Any Jammer (UPDATE: Ukraine Version)". Forbes. Archived from the original on 2025-05-04. Retrieved 2025-05-04.
- "Ukrainian EW developer on anti-drone warfare – int