Fiber proof testers are made to apply a set load to optical fiber coloring machine in order to test the potency of the spliced fiber. Our fiber proof testers can be found in both linear and rotary designs, both for proof and tension testing. Fiber proof testers are available for single mode, multimode, and polarization-maintaining fibers. Select from dedicated, standalone systems or multipurpose designs that are also able to stripping, cleaning, cleaving, splicing, and/or recoating.

Fiber Recoaters with Proof Testers offer easy, integrated solutions to recoat and test fusion-spliced fibers. The fiber recoating process restores the buffer coating to a stripped fiber, offering more flexibility compared to a heat-shrink protection sleeve, enabling it to be handled and coiled with no damage to the fusion-spliced section. The integrated linear or rotary proof tester allows users to instantly test a recoated fiber with a pre-determined load and determine the long-term longevity of the fiber. Because of the capability to restore a fusion-spliced fiber to near original condition, these systems are ideal for applications such as undersea optical fiber cables, submarine communication cabling, fiber lasers, or Distributed Bragg Reflector (DBR) lasers.

The process starts with the fusion-spliced part of fiber being placed in the middle of the mold assembly (see image to the right). Once set in position, inserts within the fiber blocks secure the spliced fiber in place. Recoat material is pumped into the cavity and after that UV-cured. The recoated fiber may then be tested by pulling on it up to a pre-determined load.

Recoater and Mold Assembly Options – Recoaters can be purchased with either an automated or manual mold assembly. The automatic mold assembly features pneumatic control of the mold plates and is also optimized for top-volume manufacturing applications. Manual mold assemblies, on the contrary, use hinged mold plates which provide more flexibility and are perfect for low-volume manufacturing or R&D applications. A computerized or manual volumetric dispensing pump and injection system is utilized to inject the recoat material to the mold cavity.

The PTR208 automatic recoater comes standard using a mold assembly for optical fiber proof-testing machine; For the manual recoaters (Item #s PTR206, PTR206B, PTR307, and PTR307B), the mold assembly is sold separately in order that customers can choose the best mold coating diameter for his or her application. Custom mold coating sizes are available up to Ø900 µm. Pre-setting up the mold assembly at the factory is also available. Contact Tech Support for more information on custom molds or factory assembly.

We offer both high-index (Item # AB950200) and low-index (Item # PC373) recoat materials to be used within these recoaters. Recoaters with manual injection pumps (Item #s PTR206B and PTR307B) are appropriate for both kinds of recoat material; other recoaters are appropriate for our prime-index material only. Our manual recoaters having an automatic injection system (Item #s PTR206 and PTR307) may be customized to work alongside the low- and-index recoat material; please contact Tech Support to learn more.

Proof Tester Options – The PTR206, PTR206B, and PTR208 Fiber Recoaters include an integrated linear proof tester, that takes the fiber up to a predetermined load (20 N) and then releases it. The linear proof tester uses uojthk same fiber holding blocks as the recoater and therefore the fiber will not need to be moved just before testing. The PTR307 and PTR307B Fiber Recoaters come with an integrated rotary proof tester, which can perform both proof and tension tests (?89 N). One list of proof test grips is included; replacement proof test grips are available below in packs of 10. Each testing process is fully programmable through the included handset or tablet controller, allowing the user to select parameters including the load, the rate at which the burden is applied, and also the hold time.

Inserts for Fiber Holding Blocks – In addition to the above, we provide a number of inserts to be used within the fiber holding blocks of the recoaters in order to support a variety of SZ stranding line. For recoaters having a rotary proof tester, the inserts are suitable for fiber coating diameters in a range between 125 µm to 900 µm. For recoaters having a linear proof tester, the inserts cover a range for fiber coatings from Ø250 µm to Ø900 µm.