HP Silica Fiber Cables

  • Update:Jun 13, 2017
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We are one of leading suppliers of high-power silica fiber cables for industrial medical and scientific applications. We offer fiber cables in a variety of fiber diameters protective tubings and connectors.

Product Introduction

We are one of leading suppliers of high-power silica fiber cables for industrial, medical and scientific applications. We offer Fiber Cables in a variety of fiber diameters, protective tubings and connectors, as shown below. Our High Power Fiber Cables exploit the air-gap-ferrule design, where the fiber prolongs into free space securing an epoxy-free area where thermal energy can be safely dissipated without burning the surrounding material, making them ideal for high-power applications. The connector ferrules, fabricated from stainless steel and copper, are used as a heat sink, pulling the heat quickly away from the fiber.

Applications:

Laser Welding
Laser Cutting
Medical Laser Delivery
Laser Target & Rangefinder
Laser Spectroscopy
Avionics
Defense and Military
Life science
Airspace

Features:

Highest purity of silica fibers (UV,VIS,NIR)
Metal coated fibers (high temperature applications)
AR-coating of fiber end face
Air-Gap-Ferrule epoxy free
Custom design HP-SMA (High Power) connector -
(fiber tip incorporate a pure fused silica capillary)
Polished or Cleaved end face
ISO 9001:2008 certified production
Comprehensive quality control system

Anatomy of an Assembly

For assembling Optical Cables the multimode fibers with core from pure fused silica and the cladding from fluoride doped silica are used. A buffer material is then applied. A buffer coats the core and cladding, strengthens the fiber. In most assemblies polyimide is used as the buffer; other assemblies use aluminum or acrylate. Then protective tubing is applied over the core, cladding and buffer to protect the fiber and provide strain relief. The standard jacketing is stainless steel silicone monocoil. Precision optical Connectors terminate the cable and are precisely aligned to ensure concentricity of the fiber. Finally, end caps protect the fiber tips against scratches and contaminants.

Choosing the Right Fiber Cable for Laser Power Delivery

The most critical issue in building Laser Power Delivery System is choosing the right Optical Fiber Cable. Three main parameters are important to make right selection:

  1. Fiber type & core diameter
  2. Coating and protective tube
  3. Connector

Choosing the Fiber

One important consideration in ordering an optical fiber assembly is which fiber type you should specify for your application. Typically, the wavelength range needed for your application should match the wavelength range of the fiber type.

Low OH¯ and High OH¯ Optical Fiber:

The optical attenuation characteristics are quite different for high OH¯ and low OH¯ optical fiber core material. For UV-VIS spectral range (λ = 0,18 - 1,2 μm) Silica-Silica fibers with High OH¯ content should be used and for VIS-NIR range (λ =0,35 -2,5 μm) – Silica-Silica fibers with Low OH¯ group concentration are more convenient.

The next significant parameter is the fiber core diameter. Smaller fiber cores are preferred in order to get the best beam quality and high flexibility. However optical fiber cables have several restrictions in their power transmitting capabilities, and there are important limitations to selecting the appropriate (smallest) fiber size. The laser itself imposes constraints on the smallest fiber that can be used.

Maximum CW Power for Each Fiber Diameter Fiber Specifications
Core dia. (um) Square (mm2) CW power (W) Core Pure silica
50 0.0020 10 Cladding Fluorine doped fused silica
100 0.0079 25 Coating Acrylate coating (-40 to 85oC)
200 0.0314 50 Silicone resin coating (-40 to 180oC)
400 0.1256 100 Polyimide coating (-190 to 385oC)
600 0.2826 300    
800 0.5024 600    
1000 0.7850 800    

Protective tubing

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