Fiber Optic Coupler 11

The 11 mm fiber optic coupler is an SM1-threaded adapter designed to mount Ø3.5 to Ø16 mm collimation packages in optical systems.

Overview

Fiber optic couplers are devices used to split or combine light between optical fibers or to couple light from free space into fibers. They are essential components in fiber-optic setups, enabling efficient light distribution, wavelength multiplexing, and signal monitoring. Couplers can be fabricated using fused fibers, planar lightwave circuits (PLC), or bulk optics, and may support single-mode, multimode, or polarization-maintaining fibers . Common types include star couplers, WDM couplers, FBT couplers, and TAP couplers .

11 mm SM1-Threaded Fiber Coupler

The 11 mm fiber optic coupler from Optecali is an SM1-threaded collimator adapter designed for optomechanical integration . Key features include:

• Diameter Compatibility: Mounts collimation packages ranging from Ø3.5 mm to Ø16 mm.
• Threading: External SM1 threads (1.035"-40) for compatibility with SM1 mounts, lens tubes, and cage systems.
• Double-Bored Center Hole: Ensures precise alignment of the optical axis with the center of the compatible component.
• Positioning Mechanism: Two inline 1/16" (1.5 mm) hex setscrews with nylon tips press the collimation package against the double-bore contact lines, securing it without damaging the optics.
• Applications: Suitable for microscopy, spectroscopy, machine vision, LED illumination, and other optical research or industrial setups.

Applications and Benefits

• Stable Optical Alignment: The double-bore design ensures the optical axis remains centered, critical for high-precision experiments.
• Versatility: Compatible with a wide range of collimation packages and optical components.
• Integration: Can be used in lens tubes, cage systems, or custom optomechanical assemblies.
• High-Performance Fiber Systems: Supports single-branch fibers, liquid light guides, and LED fiber illumination setups, making it ideal for biomedical, research, and industrial applications .

Summary

The 11 mm fiber optic coupler is a precision adapter that facilitates the integration of collimation packages into SM1-threaded optical systems. It combines mechanical stability, optical alignment, and versatility, making it suitable for laboratory and industrial fiber-optic applications. For broader fiber-optic network setups, couplers can also include PLC splitters, FBT couplers, and WDM devices to manage light distribution and wavelength multiplexing .