Fiber Optic Connectors

TACBeam Expanded Beam

TACBeam Expanded Beam

Amphenol Fiber Systems International (AFSI) offers a MIL-DTL-83526/20 & /21 qualified expanded beam rugged fiber optic connector for military and industrial applications. Expanded beam technology expands and collimates the optical signal through the connector interface path resulting in a diameter many times that of the original beam. The optical beam is then refocused into the core of the receiving fiber.The larger beam diameter improves insertion loss performance in the presence of dust and debris. Also, because the lenses do not physically contact, there is no wear on the termini, which allows the connector to be mated and demated thousands of times without affecting optical performance.

The AFSI TACBeam® is hermaphroditic, which facilitates the concatenation of multiple cable assemblies to support varying distance requirements. The connector is available in both single mode and multimode versions, can be configured to support one to four fiber optic channels using a common insert and has been designed to accept a wide variety of cables to suit any application.

Approved to German Defence Standards VG95319-100 & VG95319-101


  • Supports both multimode and single mode fiber
  • Expanded beam technology is less susceptible to dust and debris
  • Monolithic insert design facilitates cleaning
  • Hermaphroditic design enables daisy-chaining of cable assemblies to support varying distances
  • Non-contacting interface allows thousands of mating cycles


  • Tactical military ground systems
  • Oil & gas seismic systems
  • Broadcast systems
  • Rail & mass transit


Insertion Loss ≤2.0 dB multimode, ≤2.5 dB single mode
Return Loss ≥-31.0 dB mated, ≥-34.0 dB unmated
Mating Durability >2000 cycles
Operating Temperature -46°C to 71°C
Transit Temperature -54°C to 71°C
Storage Temperature -57°C to 85°C


Download Amphenol TACBeam Expanded Beam FO Connectors HERE