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Hollow Fibers
 
Home / Products / FIBERS & CABLES / Special Fibers / Deep UV or Mid IR/ Hollow Fibers
 
 
Introduction

Applications in the infrared region (2.9 to 20µm) have suffered from the lack of a reliable, cost effective means of guiding optical power in an optical fiber or other flexible waveguide. Many systems still depend on direct line of sight, lensing/mirrors, or cumbersome articulated arms.
This severely limits the scope of potential applications, particularly remote spectroscopy, minimally invasive surgical procedures, and CO2 laser material processing and printing. Flexible hollow silica waveguides offer an excellent solution in many cases; however, one must appropriately handle the waveguides and design/control launch optics in order to maximize their performance.

WAVEGUIDE STRUCTURE

The Hollow Silica Waveguides consists of a hollow silica tube with inner diameter of typically 300 to 1000µm.
The inner surface of the tube is coated with a silver mirror finish followed by a silver halide, thereby creating an efficient infrared dielectric reflector.
The reflector can be optimized for the desired wavelength region. An acrylate buffer is applied over the silica tube to provide protection from mechanical abrasion. 

   
 
 

Handling

The Hollow Silica Waveguides are in general much stronger than other solid core IR waveguides.
However, because of the hollow structure, the waveguides should be handled with reasonable care. The outer acrylate jacket will protect the capillary tube during normal handling, but does not eliminate the stress incurred from tight bends or compression on the sides of the device.
Because of the stiffness of the larger diameter Hollow Silica Waveguides, they should not be subjected to bend diameters less than 30cm. Tighter bends have a potential for breaking the glass and destroying the waveguide. 

 
 
 

Optical Performance

The Hollow Silica Waveguides can transmit infrared power in the 2.9 to 20µm wavelength region and can be optimized for 9-11µm CO2 or 2.9µm Er:YAG lasers.
Typical attenuation at 10.6µm (CO2) for a 1000µm ID waveguide is <0.5 dB/m. The waveguides can handle up to 100W at CO2 wavelengths without external cooling, and ≥1000W with external cooling.

STANDARD CONNECTORS

SMA, ST, FC are often used but the end faces are cleaved instead of polished.

 
 
 
 

DATASHEET

 
Hollow Fibers
 
 
Home / Products / FIBERS & CABLES / Special Fibers / Deep UV or Mid IR/ Hollow Fibers
 
 
OUR DETAILS
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91080 Courcouronnes - FRANCE
+33 1 69 36 64 32

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