Fiber optics

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Fiber optics is a crafting component in Fallout 4.


Thin, flexible fibers made of high-quality glass, used to transmit signals more efficiently than with metal wires. In-game, fiber optics are a key component to high-tier electronic weapon modifications and settlement devices, such as laser turrets.

With the Contraptions Workshop add-on, they can be used to produce energy weapons on the energy weapon forge.


Miscellaneous object (see below)
rangeIcon range
levelIcon level
Fiber optics (varies)
Original item Yield Weight Yield/W
Applicator 1 0.5 2
Biometric scanner 1 3 0.33
Ear examiner 1 0.7 1.42
Fiber optics 1 0.1 10
Shipment of 25 units 25 0
Flight data recorder 2 3 0.66
High-powered microscope 1 5 0.2
Microscope 1 5 0.2
Laser tripmine (disarm) 1 N/A N/A
Prototype biometric scanner 1 3 0.33


  • 49 can be obtained in the Jamaica Plain Town Hall basement by disarming a large amount of laser tripwires. The tripwires can be reset by pushing a button in the same room for infinite fiber optics, crystals and steel.
  • Teagan sells shipments of 25 fiber optics.
  • After a peaceful conclusion to the Restoring Order quest from the Automatron add-on, Isabel Cruz sells shipments of 25 fiber optics.
  • Alexis Combes occasionally sells shipments of 25 fiber optics. However, her available shipments are not fixed and will cycle periodically among various shipments including ballistic fiber and nuclear material.
    • One method to cycle her shipment stock manually is to wait/sleep 48 hours.
    • Alternatively, killing her then reloading a prior save can force her available shipment to refresh; other wares will remain unchanged.
Crafting in Fallout 4

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