Fiber Bundle Assemblies

Customized Optical Fiber Bundles for Light Transmission, Sensing, and Imaging Applications

WEINERT Industries develops and manufactures customized fiber bundle assemblies designed for efficient light transmission, sensing, imaging, and optical measurement applications. The company offers complete in-house capabilities, ranging from raw materials and fiber production to bundle assembly and specialized optical components. Fiber bundles can be configured in customer-specific geometries, including multi-branch designs and cross-section converters from round to linear arrangements.

Product Portfolio

Fiber Bundle Assemblies

Customized optical fiber bundles optimized for challenging industrial, scientific, and medical environments.

Key Features

• Customer-specific bundle geometries and layouts

• Multi-branched fiber bundle configurations

• Round-to-linear cross-section converters

• Suitable for liquids, gases, and solid media

• Designed for harsh industrial environments

• Available with various connector and tubing options

• Compatible with vacuum applications and feedthroughs

Fused Silica Fiber Bundles

High-performance fiber bundles manufactured from UV-VIS and VIS-IR fused silica fibers, optimized for low-loss optical transmission.

Key Features

• UV-VIS versions (high OH fused silica)

• VIS-IR versions (low OH fused silica)

• Core diameters starting from 50 µm

• Bundle lengths up to 20 m

• High transmission efficiency

• Flexible and low-loss design

• Autoclavable and temperature-resistant versions available

Technical Capabilities

Fiber Bundle Assemblies

• Individual fiber diameters from 20 µm to 105 µm (larger diameters available on request)

• Numerical Aperture (NA):

  • Fused Silica Bundles: 0.10 – 0.38 (standard 0.22)

  • Optical Glass Bundles: 0.56 – 0.86

• Small bending radii with high flexibility

• Fluorescence-free bonding options

• Standard and custom connectors (SMA, ST, FC, etc.)

• Wide range of protective tubing solutions

Fused Silica Fiber Bundles

• Standard individual fiber diameters:

  • 50 µm

  • 70 µm

  • 80 µm

  • 105 µm

• Standard lengths:

  • 5 m

  • 10 m

  • 20 m

• Customer-specific dimensions available

• Polyimide coatings up to 300 °C

• Glass-finish coatings for demanding environment

Customized End Faces & Optical Waveguide Assemblies

A key capability of WEINERT Industries is the integration of customized polished end faces. Fiber bundles can be supplied as fully assembled optical waveguides with precisely polished end faces to improve coupling efficiency, transmission performance, and integration into optical systems. This enables customer-specific solutions for spectroscopy, illumination, sensing, and imaging applications

Benefits of Customized End Faces

• Improved optical coupling efficiency

• Reduced insertion losses

• Enhanced transmission performance

• Application-specific optical interfaces

• Ready-to-install optical waveguide assemblies

Key Advantages

• Fully customized fiber bundle designs

• In-house fiber manufacturing and assembly

• UV, VIS, and IR wavelength compatibility

• High flexibility and small bending radii

• Temperature-resistant and autoclavable options

• Vacuum-compatible configurations

• Customized polished end-face solutions

• Suitable for harsh industrial and medical environments

Typical Applications

• Spectrometry

• Endoscopy

• Illumination Systems

• Optical Sensors

• Pyrometry

• Monitoring Systems

• Optical Measurement & Metrology

• Healthcare & Medical Technology

Fiber Bundle Assemblies

WEINERT Industries provides customized Fiber Bundle Assemblies and Fused Silica Fiber Bundles for high-performance light transmission, sensing, imaging, and measurement applications. The solutions combine flexible bundle geometries, UV-to-IR capability, high transmission efficiency, and customer-specific polished end faces. With complete in-house manufacturing expertise, WEINERT delivers tailored fiber bundle systems for industrial, scientific, and medical applications.