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    MCVD Tip: Master Tube Straightening Techniques

    by:
    Fiber Process Development and Manufacturing: Tips Tips
    Published: October 4, 2018

    Operating an MCVD is a hands-on activity. This is particularly true for the initial deposition and final tube straightening processes. Over the years, I’ve developed very specific techniques to control the process – and the outcome. Here are some quick tips:

    • During the initial deposition tube straightening step, it’s important to take time to properly form joints to prevent lost fabrication runs. If you have a thickened joint area, unfused oxides can condense, potentially plugging the exhaust tube and/or forming cracks.
    • In the final tube straightening process, there is one final step, which I call stress relief. Some stresses may have developed during the straightening process. When your burner initially heats up at the process start point the tube could sag. To prevent this possibility I heat the headstock end very warm and look for tube sagging. If sagging occurs, the exhaust end is lightly heated while supporting the headstock end to eliminate runout.
    • Read more tips on tube straightening: “Preparing to manufacture an optical fiber preform.”

     

    Additional resources from the FOC team include:

    Have questions about this FOC Tip?

    Contact FOC with questions at (800) 473-4237 / 508-992-6464 or email: FiberOpticCenter@focenter.com and we will respond ASAP.
     

    Additional articles from our preform fabrication consultant include:

    About the Author
    FOC Tips Fiber Optic Center has a team of technical experts and marketing strategists with decades of years in the field. This team contributes to the fiber, cable and specialty industries coverage through news, alerts, reports and general media information.
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    About Fiber Optic Center, Inc.
    Fiber Optic Center, Inc., (FOC), is an international leader in distributing fiber optic components, equipment and supplies and has been helping customers make the best cable assemblies in the world for over two decades. Several areas of specialization and expertise, in which they are the industry leader, make them the preferred choice for many of the world’s fiber professionals. In these key technology areas, FOC is "at least as technical as the manufacturer" about the products they sell. Striving to "make the business part easy," they offer outstanding and personal customer service, low or no minimum purchase order values, and from-stock delivery on industry-leading products and technology. FOC is the industry connection to the most innovative optical products, technologies and technical experts who integrate their manufacturing knowledge and vast experience into customers' worldwide operations. @FiberOpticCntr

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    Kathleen Skelton, Director of Strategic Marketing, C: 617-803-3014 . E: kskelton@focenter.com
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