Excellence in VAD Core Preform Manufacturing
Your partner in preform production technology
Vapor Axial Deposition (VAD)
A fiber preform production technique where core and inner cladding layers are simultaneously deposited as glass particles to form the fiber inner cladding and core structure of the preform.
Excellence in VAD Core Preform Manufacturing
High-quality telecom fiber starts with a stable core preform. In VAD manufacturing, purity, geometry, and refractive index control must remain consistent across the core process to create a reliable base for cladding and fiber drawing.
Nextrom’s Vapor Axial Deposition (VAD) production solution helps manufacturers control this critical first stage of telecom preform manufacturing with proven equipment, process know-how, and scalable production concepts for consistent core preform quality.
The advanced vapor-phase deposition process enables the production of preforms with exceptional core structure integrity and highly accurate refractive index control. This precision is essential for achieving ultra-low attenuation performance required by modern optical communication networks.
Designed for stable, high-output manufacturing, Nextrom’s VAD technology supports both flexible production scaling and consistent product quality. The solution also supports large core preform production, combining stable geometry, repeatable quality. Whether for specialized applications or large-scale telecom fiber production, the process adapts efficiently to varying manufacturing requirements.
In the highly competitive fiber optic communications industry, core quality defines performance, and Nextrom’s VAD technology delivers the precision, reliability, and scalability needed for next-generation optical fiber production.
core quality
Precise refractive index control and bubble-free production ensure highly consistent core structures and reliable core quality throughout the manufacturing process.
ultra-low
attenuation
Achieve excellent optical performance with consistently low attenuation values
high-output
production
Stable deposition and optimized process efficiency enable reliable, high-capacity manufacturing with stable production and minimal maintenance.
large core
preforms
Large core preform production up to 10,000 fkm, improving productivity and downstream manufacturing efficiency.
advantages of Nextrom VAD equipment
built for reliable & scalable core preform production
advanced 657A1 capability
Integrated inner cladding fluorination during VAD deposition enables the production of advanced G.657.A1-compliant fiber structures with stable and repeatable process performance.
scalable manufacturing
The VAD process is designed to support both specialized applications and large-scale telecom fiber production while maintaining stable process control and consistent quality.
efficient process design
Low cleaning requirements and optimized deposition performance help reduce downtime and improve overall production efficiency.
repeatability
Stable process control enables consistent preform quality from core to core, supporting reliable manufacturing performance and higher production confidence.
Precision & scalability in VAD core preform manufacturing
with precise refractive index control, ultra-low attenuation and scalable high-output production
nextrom's special experience
unmatched flexibility, unrivaled expertise
upgradability
Nextrom’s VAD technology is designed for long-term evolution. Existing systems can be upgraded with the latest automation, process control, and hardware developments to support changing production requirements and next-generation fiber designs.
With dedicated lifecycle support, customers benefit from improved performance, enhanced process stability, and extended equipment lifetime, while minimizing production interruptions and enabling continuous process improvement.
process knowledge
Rely on our dedicated experts, backed by decades of combined experience to guide you through commissioning and process training. Our tailored setup recommendations minimize tuning time and speed up your production ramp-up. With a proven global track record and hands-on industry know-how, we ensure you get into full-scale production faster, more efficiently, and with unwavering confidence.
references
We deliver proven know-how to jump-start your production, maintain top-tier quality, and preempt operational pitfalls. Industry leaders repeatedly rely on Nextrom, clear proof of our unwavering reliability and superior performance.
local support
Benefit from truly local teams across the US, China, India, and Europe, each offering quick response times, spare part availability, and support in your local language. With experienced engineers on-site, you’ll minimize downtime, optimize productivity, and have peace of mind knowing expert help is always within reach.
find out more about VAD core manufacturing
Get in touch with our experts and find out more about our VAD solutions
OFC 04C – VAD Core Deposition System
| High Deposition Rate: | 12,5 g/min |
| Collection Effiency: | 57% |
OFC 08C – Core Sintering System
Drying and Sintering of Core Preforms
OFC 09C – Core Degassing System
Up to 3 preforms can be simultaneously degassed
Bubble Free Core Preforms
OFC 15 – Glass Working Lathe
Attachement of Upper & Lower Handle
OFC 17 – Core Streching System
High Accurate Core Rods
Glass Cutting Saw
Core Rod Measurement
Index Profile Measurement
Target weight for Cladding
Benefits of VAD core
- Precise refractive index control for consistent core quality
- Ultra-low attenuation potential for high-performance telecom fibers
- Stable high-output production with reliable process repeatability
- Large core preform capability up to 10,000+ fkm
- Advanced G.657.A1 capability through inner cladding fluorination
- Scalable manufacturing from specialized applications to mass production
- Efficient process design with low cleaning requirements and reduced downtime
- Consistent core-to-core repeatability for stable fiber performance
- Long-term upgradability with modern automation and process control solutions
- Global process expertise, commissioning support, and local service availability
Solutions for VAD production
- OFC 04 Core Deposition System
- OFC 08C Core Sintering System
- OFC 09C Core Degassing System
- OFC 15 Glass Working Lathe
- OFC 17C Core Stretching System
- Glass Cutting Saw
- Core Rod Measurement
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