Post-Mountable Adapter for FiberBench Accessories

  • Ø1/2" Post-Mountable Adapter for FiberBench Accessories
  • Compatible with Most FiberBench Modules

Application Idea

RABH-600 Wave Plate Module
Mounted on Ø1/2" Post with FBA
FiberBench Adapter



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  • Use FiberBench Components for Free-Space Applications
  • Mount FiberBench Accessories with Dowel Pins to Ø1/2" Posts
  • #2-56 Setscrew for Locking Accessory in Place (Hex Key Included)

Our FiberBench accessories are a line of miniature components designed for holding small optics in fiber-based assemblies. By using the FBA adapter, you can easily integrate these compact accessories into free space optical systems by securing them to Ø1/2" Posts. The FBA can be mounted to a Ø1/2" post via the 8-32 (M4) tapped hole that goes through the center of the adapter. This freedom to mount individual pieces to a post gives the user the option of using the compact FiberBench accessories for free space applications.

The adapter is designed to be compatible with FiberBench accessories that have two steel dowel pins on their underside. These pins fit into the receiving holes on the adapter, and the 2-56 setscrew on the side of the adapter can be used to lock the FiberBench accessory in position. 

Compatible FiberBench Accessories
Optic Mounts (not compatible with HCA3 Wall plates and FT-MMAC) XY Tweaker Module Polarizers
Beamsplitter Modules Mirror Modules Rotating Wave Plates

FiberBench Systems

Thorlabs offers Single-Axis and Multi-Axis FiberBenches that form the foundation of a nearly infinite array of miniature fiber optic systems. One of the main advantages of building FiberBench systems is that all the components are aligned along common beam paths (14.3 mm above the deck) that are parallel to the base. Thus, they simplify setups that would normally require extensive alignment procedures. The equally sized and uniformly spaced mounting holes on the FiberBenches are designed to hold a wide array of FiberBench accessories.

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Post-Mountable Adapter for FiberBench Accessories

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
FBA Support Documentation
FBAØ1/2” Post-Mounting Adapter for FiberBench Accessories, 8-32 Thread
+1 Qty Docs Part Number - Metric Price Available
FBA/M Support Documentation
FBA/MØ1/2” Post-Mounting Adapter for FiberBench Accessories, M4 Thread