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A fiber optic extender sends video, and optionally USB, audio, and control, over single-mode or multimode fiber optic cable, reaching distances that copper cannot. Sold in matched pairs, the transmitter connects to the source and the receiver connects to the display, pushing a signal up to 1,000 m (3,300 ft) from the source. Because fiber carries light rather than electricity, a fiber optic extender is immune to electromagnetic interference (EMI) and ground loops, which makes it the standard choice for government, military, aerospace, medical, industrial, and surveillance deployments. KVMSwitchTech stocks HDMI, DVI, dual-link DVI, USB, FireWire, and KVM fiber extenders.
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Choose the extender built for the video or data signal you are running. Each type is optimized for a specific interface and maximum resolution.
| Extender type | Extends | Max resolution / spec |
|---|---|---|
| HDMI Fiber Extender | HDMI video + audio | Up to 1080p (HDMI 1.3, HDCP compliant); 4K models available |
| DVI Fiber Extender (single link) | DVI-D single link | Up to 1920x1200 |
| Dual Link DVI Fiber Extender | DVI-D dual link | Up to 2560x1600 |
| USB Fiber Extender | USB peripherals | Long-distance USB device connectivity |
| FireWire (IEEE 1394) Fiber Extender | FireWire devices | 400 Mbps over multimode fiber |
| Fiber Optic KVM Extender | Keyboard/video/mouse | Full remote console over fiber |
Fiber dramatically outruns copper. HDMI and single-link DVI fiber extenders reach up to 3,300 ft (1,000 m), while dual-link DVI reaches up to 984 ft because of the higher bandwidth it carries. Buy for the actual cable run, plus slack for routing.
Multimode fiber (typically 50/125 µm) is common and cost-effective for runs within a building or campus. Single-mode fiber supports the longest distances. Confirm which fiber the extender requires, and whether it needs one strand or multiple strands, before you order cable.
| Factor | Fiber Optic Extender | HDBaseT / Cat Extender |
|---|---|---|
| Max distance | Up to 3,300 ft (1,000 m) | ~330 ft (100 m) |
| EMI immunity | Complete (optical) | Susceptible to electrical noise |
| Best environment | Long runs, high-EMI, secure facilities | Standard AV rooms, shorter runs |
Routing many sources over long distances? Pair a fiber extender with an HDMI matrix switch for facility-wide distribution.
It is a pair of devices (transmitter and receiver) that send video, and optionally USB, audio, or control, over fiber optic cable. The transmitter connects to the source, the receiver connects to the display, extending the signal far beyond copper limits.
HDMI and single-link DVI fiber extenders reach up to 3,300 ft (1,000 m). Dual-link DVI reaches up to 984 ft due to its higher bandwidth. Copper HDMI, by comparison, is reliable only to about 15-25 ft.
Multimode (50/125 µm) fiber is common and cost-effective for building or campus runs; single-mode supports the longest distances. Check the extender's spec for the required fiber type and number of strands before buying cable.
Yes. Because fiber carries light instead of electricity, it is immune to EMI and ground loops, which is why fiber extenders are used in military, medical, industrial, and surveillance settings. EMI-shielded models add protection at the connectors.
They are sold in matched pairs (a transmitter and a receiver). The transmitter connects to the source device and the receiver connects to the display or peripheral at the far end.
Yes. Standard HDMI fiber extenders support up to 1080p, and 4K@60Hz models with IR and RS-232 control are available for HDMI 2.0 deployments over a single strand of multimode fiber.
Not sure which fiber extender fits your run? Our engineers match signal type, distance, fiber, and resolution to your project. Call (216) 798-7530 for a complete system design.
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