Why Radio Jamming Cannot Stop Fiber Optic Drone Warfare
In fiber optic drone warfare, a first-person-view (FPV) drone takes its commands over a thin optical cable that unspools behind it, so a radio jammer has no control signal to cut. <a href="https://www.twz.com/news-features/russian-fiber-optic-drones-are-now-reaching-into-ukrainian-cities-far-behind-the-lines">The War Zone</a> reported in October 2025 that Russian and Ukrainian forces both have fiber-optic FPVs able to reach as far as 25 miles. Most fly shorter distances on smaller spools. The cable also holds the link when the drone flies low behind terrain, which a radio-controlled drone cannot match. A large spool adds weight, which slows the drone and reduces its maneuverability.
Why a Cable Beats a Radio Jammer
A fiber-optic drone cannot be jammed through its control link, because that link is a strand of glass rather than a radio signal. A spool of thin optical fiber on the drone pays out as it flies. The operator's goggles and controller receive video and send commands over that strand, so the control link gives off no radio emissions for a jammer to detect or drown out.
Fiber optic drones, also called fiber optic UAVs (unmanned aerial vehicles), solve a second problem as well. The War Zone describes the fiber as resistant to both jamming and terrain blocking, which radio-controlled drones cannot match. A fiber-optic FPV can fly low behind terrain and keep its video and command link.
On reach, The War Zone reported that both sides field fiber-optic FPVs that can fly as far as 25 miles, with most covering shorter distances on smaller spools. The same cable design means a counter-unmanned aircraft system (counter-UAS) built around radio jamming does little against the control link of this class. The FPV drones guide explains the radio-controlled version, and the drone jammers page covers the equipment this design sidesteps.
Reported Range and What Limits It
The upper reported range for a fiber-optic FPV is as far as 25 miles, and efforts to pass 30 miles are underway, according to The War Zone reporters Howard Altman and Tyler Rogoway. Andriy Hyrtseniuk, head of Ukraine's Brave1, told the outlet that "the level of 40 kilometers (about 25 miles) was completely reached, and it works."
Hyrtseniuk named two limits on that figure. Wind moves the fiber, which reduces effective range. Range also depends on whether you measure the length of the fiber or the distance from the ground station to the target.
A social media post cited in the report claims Russian 50-kilometer spools are in testing, and The War Zone does not verify it.
| Reported item | What the source says |
|---|---|
| Common reach | Most fiber-optic FPVs fly shorter distances with smaller spools |
| Upper reported reach | As far as 25 miles, on both Russian and Ukrainian models |
| Development target | Efforts to pass 30 miles are underway |
| Brave1 statement | 40 km (about 25 miles) "completely reached, and it works" |
| Russian 50-km spools | Claimed in a social media post; not verified by The War Zone |
| Wind | Moves the fiber and reduces effective range |
| How range is measured | Depends on fiber length versus ground-station-to-target distance |
The Weight and Maneuverability Tradeoff
A longer reach costs a fiber-optic drone speed and agility, because a large spool adds weight that slows the drone and reduces its maneuverability. The War Zone also notes that most fiber-optic FPVs carry smaller spools and fly shorter distances.
The tether brings its own limits. It is one-way and fixed in length, it can snag, and it cannot be reeled back once it has paid out. Wind adds a further limit by moving the fiber in flight, which Hyrtseniuk said cuts effective range.
A radio FPV depends on a link that can be jammed or blocked by terrain.
Who Builds Them
Both Russia and Ukraine build fiber-optic FPVs. Russia began using them in spring 2024, and Ukraine quickly followed, according to The War Zone.
Hyrtseniuk said more than 35 Ukrainian companies build fiber-optic drones and that Ukraine is "comparable with Russia." Profiles of individual makers sit in the Ukrainian drone companies guide.
The 35-company figure measures how many Ukrainian builders exist. It says nothing about how many fiber-optic drones those builders deliver each month.
Reported Countermeasures and the Counter-UAS Market
The countermeasures reported against fiber-optic FPVs are physical, led by nets strung over roads and buildings. On Sunday 5 October 2025, a Russian fiber-optic FPV struck inside Kramatorsk for the first time, according to the city council. It hit a pickup truck parked near an apartment building, and no one was injured.
Kramatorsk sits about 12 miles from the front and had about 200,000 residents before the invasion, roughly half that by October 2025. Serhii Sternenko said "There is no such thing as a rear area up to 30 kilometers (about 18.5 miles) from the front." He urged cities in that zone to close roads with anti-drone nets, limit civilian movement on the streets, and evacuate non-combatants.
Russia first introduced miles-long net tunnels over roads, and Ukraine later adopted them. Russia has also netted buildings, including in Belgorod. The anti-drone netting page covers this category of protection.
Because this class has no radio control link, any counter-UAS layer built mainly on jammers leaves a gap.
What This Means for Drone and Counter-Drone Spending
None of the countermeasures in The War Zone report is a radio system. A counter-drone budget built only for radio-controlled threats leaves the control link of this class untouched. Jammers keep their role against radio-controlled drones.
When a counter-drone product is pitched against FPV threats, ask whether it addresses drones with no radio control link, since jamming alone does not. Ask the same of range claims: does the figure describe fiber length or ground-station-to-target distance? The counter-drone companies list covers the firms selling these systems.
Every figure here comes from The War Zone, 6 Oct 2025 report on fiber-optic FPV drones.
Drones and UAS FAQs
What is a fiber-optic drone?
A fiber-optic drone is a first-person-view (FPV) drone steered over a thin optical cable that unspools behind it as it flies. The operator's goggles and controller receive video and send commands over that cable. Russia began using them in spring 2024, and Ukraine quickly followed.
Can you jam a fiber-optic drone?
A radio jammer cannot cut a fiber-optic drone's control link, because video and commands travel over an optical cable with no radio emissions. The War Zone reports the fiber also resists terrain blocking. The countermeasures reported so far are physical, such as nets over roads and buildings.
How far can a fiber-optic FPV drone fly?
The War Zone reported in October 2025 that both Russian and Ukrainian fiber-optic FPVs can reach as far as 25 miles, though most fly shorter distances on smaller spools. Efforts to pass 30 miles are underway. Brave1's Andriy Hyrtseniuk said wind reduces effective range and that the figure depends on whether fiber length or ground-station-to-target distance is measured.
When did fiber-optic drones first appear in Ukraine?
Russia began using fiber-optic FPVs in spring 2024, and Ukraine quickly followed, according to The War Zone. Brave1's Andriy Hyrtseniuk said more than 35 Ukrainian companies build them. On 5 October 2025, a Russian fiber-optic FPV struck inside Kramatorsk for the first time.
What are the downsides of a fiber-optic drone?
A large spool adds weight, which slows the drone and reduces its maneuverability. The tether is one-way and fixed in length, it can snag, and it cannot be reeled back. Wind also moves the fiber and cuts effective range.