Multi-Lamp Vertical OVD Deposition Equipment
The Multi-Lamp Vertical OVD Deposition Equipment is designed for outside vapor deposition of high-purity quartz soot preforms used in optical fiber manufacturing. The vertical configuration and multi-lamp heating design enable precise temperature control and stable deposition conditions for large-size preform fabrication.
The system features multiple independently controlled heating zones, allowing accurate adjustment of thermal profiles during deposition. This ensures uniform soot formation, consistent layer growth, and improved material homogeneity throughout the preform.
Optimized for industrial production environments, the system offers:
Multi-zone temperature control for process stability
Vertical deposition for uniform layer growth
Support for large-diameter soot preforms
The Multi-Lamp Vertical OVD Deposition Equipment operates based on the Outside Vapor Deposition process, where silica soot particles are deposited onto a rotating and vertically oriented substrate. This approach allows high deposition rates and excellent control over preform diameter and uniformity.
The equipment incorporates a preparation chamber and a high-temperature chamber, enabling controlled transition between deposition and high-temperature treatment. This configuration improves process stability and supports consistent soot consolidation behavior.
Multiple heating zones, typically five or more, are independently controlled to maintain precise thermal conditions along the deposition axis. This multi-zone design minimizes thermal gradients and reduces structural stress within the growing preform.
The system operates under controlled negative pressure, typically below 1 Pa, enhancing process cleanliness and reducing contamination risks during deposition.
Designed with a rigid multi-tier frame structure and a fully sealed steel plate enclosure, the equipment ensures mechanical stability, safety, and reliable long-duration operation in industrial environments.
Process Performance
Maximum Production Temperature: ~1650°C
Operating Pressure: < 1 Pa
Process Configuration
Process Gases: None
Process Chamber: Preparation chamber + high-temperature chamber
Heating Zones: ≥5 zones
Preform Parameters
Inner Cavity Diameter: ~450 mm
Control System
System Control: Temperature control and pressure control
Mechanical Structure
Frame Structure: Multi-tiered frame
Total Frame Height: ~13 m
Total Weight: ~26 tons
Footprint: ~5 m × 5 m
Tower Configuration: Fully sealed with steel plates
Independent control of multiple heating zones ensures uniform temperature distribution and stable deposition conditions.
Vertical deposition supports consistent layer growth and precise control of preform geometry.e and minimal contamination.
No process gases are required, reducing contamination risk and simplifying process control.
Designed to operate at temperatures up to approximately 1650°C for high-quality soot treatment.
What is the advantage of a multi-lamp heating design?
It allows independent temperature control across multiple zones, improving uniformity and reducing thermal stress in the preform.
Why is negative pressure used during deposition?
Operating under negative pressure improves process cleanliness and minimizes contamination
Does the OVD process require process gases?
No, this system operates without process gases during deposition.
What types of fibers can be produced using this equipment?
The system supports preform fabrication for both single-mode and multimode optical fibers.
Can the equipment be integrated into a turnkey manufacturing line?
Yes, it is designed for seamless integration with upstream and downstream equipment in complete production lines.
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