Metallized fibers                                                                                 

We now offer single-mode and multimode mode fibers with high temperature resistant Aluminum, Copper, Nickel, Zinc, Tin, Chrome alloy coatings. Thin layer of metal provides mechanical strength and eliminates outgassing, at the same time increasing temperature range and heat conductivity of the fiber. Surprisingly cost-effective compared to their gold-coated counterparts, the fibers can withstand temperatures up to 700° C or even higher, depending on heating pattern and atmosphere composition.

Coating thickness depends on fiber diameter and ranges from 20 micron for 9/125 fiber to 60 micron for large-core multimode fibers 
True temperature and time limits of metal-coated fibers depend on many factors, such as atmosphere composition, mechanical stress and heat cycling pattern. Copper alloy coating is limited to 700°C (short-term) / 650°C (long-term) exposure in air and 600°C (indefinite) in inert atmosphere or vacuum. Aluminum-coated fibers can withstand temperatures up to 450°C (long-term).

As the light travels through fiber core it induces very low currents on the surface of the metal that drain power from the waveguide. In special larger cladding fibers the metal is further away from the core and attenuation is much lower.

Once metal coating is removed the fibers can be spliced, cleaved and terminated in exactly same way as the regular telecom fibers.
Copper and Tin -alloy coated fiber can be soldered with regular techniques and solder. 
Our fibers are available with Teflon (260°C) and stainless steel braided (600°C) jackets. 

We can terminate metallized fibers with most fiber-optic connectors. High-temperature fiber connectors employing heat-resistant adhesive are also available.