 | Many application needs can be met with less expensive borosilicate glass fiber assemblies. This fiber transmits well in the visible, from 380-1700nm. Borosilicate glass fiber is typically small in diameter (<100um), with a thin cladding and no buffer. This allows it to be more flexible and have a very tight bend radius - perfect for small spaces.
The high core to cladding ratio makes borosilicate fiber ideal for tight packing into bundles, as seen below. Bundles can contain hundreds to thousands of single fibers, maximizing light collection and transmission, and offering valuable redundancy in case of fiber breakage.
Borosilicate fiber also boasts a larger numerical aperture, making it well-suited to spectroscopy and sensing applications requiring efficient light collection. Bundle geometries can be customized to the application, with each termination uniquely matching the object to which it is mated - a narrow slit, a round LED, or a series of legs routed to different sampling locations. |
| Borosilicate Bundle Size | Standard Fiber Assemblies | Enhanced Fiber Assemblies | | Part Number | Price | Part Number | Price | | 400um | GFS4-BS-01 | $69.00 | GFE4-BS-01 | $89.00 | | 600um | GFS6-BS-01 | $79.00 | GFE6-BS-01 | $99.00 | | 1000um | GFS10-BS-01 | $89.00 | GFE10-BS-01 | $109.00 |
 | We have 35um and 50um diameter fiber in stock, with numerical apertures of 0.55 and 0.66. Custom NA's and core sizes may be available upon request for volume inquiries.
| Fiber Diameters Available | | NA | 0.55 | 35um, 50um | | 0.66 | 35um, 50um | The large number of fibers used in a borosilicate fiber bundle makes it ideal for light manipulation. A multi-legged assembly can be built such that the input from each leg is evenly distributed across the bundle area (randomized), thus mixing light from different sampling points (or sources of different wavelength) without the use of a diffusing element and its associated attenuation. Conversely, the light can be carefully mapped, with input from each leg routing to a different part of the bundle or slit. |
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| | RANDOMIZED
Borosilicate fibers bundled and mapped randomly to two different assembly legs.
Combining light sources Efficient signal splitting | MIXED
Borosilicate Illumination fibers around a larger fused silica read fiber.
Reflection Measurements Fluorescence excitation/read | MAPPED
Borosilicate fiber in a mapped line array routed to three different assembly legs.
Customized illumination Alignment to a slit | 
| All of our standard and custom assembly options are available for use with borosilicate fiber!
| Contact us at photonics@gulffiberoptics.com today!
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