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Integrated capstan and apparatus for screen testing an optical fiber

A winch, fiber optic technology, used in optical instrument testing, machine/structural component testing, and material strength testing using stable tension/pressure, which can solve problems such as cohesive failures

Active Publication Date: 2018-03-27
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The extra strain on the fiber imparted by the capstan assembly often results in cohesive failure of the second coating of the original section of fiber near the splice joint

Method used

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  • Integrated capstan and apparatus for screen testing an optical fiber
  • Integrated capstan and apparatus for screen testing an optical fiber
  • Integrated capstan and apparatus for screen testing an optical fiber

Examples

Experimental program
Comparison scheme
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Embodiment

[0094] Figure 6A Shown is an aluminum winch with a center channel. Figure 6B The same capstan is shown when the channel is filled with polyurethane gel. Figures 7A-7E A process showing the filling of channels with polyurethane gel. Figure 7A Shown is an aluminum capstan with unfilled channels. winch insertion Figure 7B Inject the uncured polyurethane gel formulation into the groove through the injection hole. Injection holes can be located in the mold or machined into the capstan. The polyurethane gel formulation cures when deployed in the mold. In the example shown, curing was accomplished by heating the capstan in the mold at 90°C for 2 hours. After curing, remove the mold ( Figure 7C ). exist Figure 7D Apply a cover coat. In the illustrated embodiment, the liquid form of the capping layer is applied to the surface of the cured polyurethane material by brushing or spraying. Figure 7E Curing of liquid capcoat formulations is shown to form solid capcoats.

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Abstract

Provided is an integrated capstan for use in fiber processing and testing apparatus. The integrated capstan features a fiber-engaging material that provides a contact surface for fibers. The hardnessof the contact surface is controlled to minimize transfer of stress to the fibers to prevent damage to fiber coatings or fiber splice junctions during conveyance or screen testing of fibers during production. The fiber-engaging material includes a resilient material and an optional capping layer. The resilient material may be a lightly crosslinked polyurethane gel. Capping layers include polymersformed by UV curing of aliphatic urethane diacrylate compounds or moisture curing of diisocyanate compounds.

Description

[0001] This application claims priority under 35 U.S.C. §119 to U.S. Provisional Application Serial No. 62 / 172,430, filed June 08, 2015, which application is based upon and is hereby incorporated by reference in its entirety. technical field [0002] This specification generally relates to performing screening tests on optical fibers. More specifically, the present specification relates to integrated winches and systems for screening optical fibers incorporating integrated winches. Background technique [0003] In the drawing process, an optical fiber is formed from a preform. The preform is a consolidated glass comprising a central core region surrounded by one or more annular cladding regions. The core region is a region of higher index glass (e.g., Ge-doped silica glass), and the first or more cladding regions are regions of lower index glass (e.g., undoped silica glass). glass or negatively doped silica glass). To form an optical fiber, the preform is heated to a draw...

Claims

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Application Information

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IPC IPC(8): G01M11/08
CPCG01M11/088G01N33/386G01N3/08B65H57/14B65H2404/10B65H2404/532B65H2701/32
Inventor Z·刘
Owner CORNING INC
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