
QUESTION: Does initial tube straightening minimize runout? Do you have SOPs available on this?
ANSWER:
Initial deposition tube straightening is performed to minimize runout. Carefully using a hand burner at a low temperature will prevent vaporizing glass at straightening points. Fusing the deposition tube to the larger soot collecting tube is typically done with a positive internal tube pressure. The glass joint is expanded during the fusing process to form a uniform glass transition thickness.

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ADDITIONAL CONTENT & RESOURCES:
- Category Resource: FOC Fiber & Cable
- Find More Information in this Blog: Preparing to Manufacture an Optical Fiber Preform
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