OFC 37 World´s fastest proof-tester
January 15th, 2026
The OFC 37 sets a new benchmark in optical fiber proof testing with record speeds of 3500 m/min, utilizing Nextrom’s 1000 km reel technology and a cleanroom space-saving side-by-side layout.
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Alain Giraud
alain.giraud@rosendahlnextrom.com
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world´s fastest nextrom’s optical fiber prooftester
OFC 37 Optical Fiber Proof Tester
Nextrom takes optical fiber proof testing to the next level with the OFC 37 High-Speed Proof Tester. The world’s fastest optical fiber proof testing system, reaching process speeds of 3500 m/min. Its robust structural design is future-proofed for higher speeds up to 4000 m/min, supporting the next generation of high-capacity fiber production.
cleanroom space-saving side-by-side layout
Beyond speed, the OFC 37 is engineered for practical, high-capacity post-draw proof testing. The line utilizes Nextrom’s 1000 km reel technology, enabling direct proof testing from draw spools into 50 km delivery spools for maximum efficiency. Its cleanroom space-saving side-by-side layout enables efficient factory integration, while the design allows front & back maintenance access, ensuring easy operation and service.
comparison OFC 37 vs. OFC 35 layout 5 mfkm capacity optical fiber factory
Comparison - Optical Fiber Factory with 5 Mfkm capacity
Proof-tester´s control features enhance reliability and uptime.
Flange detection system minimizes rewinding, while reel recipe free operation ensures stable, reliable performance and seamless changeovers.
A quiet and vibration-free process guarantees consistent fiber handling, even at maximum speed. In the event of a fiber break, the fast stop system with whipping protection protects the fiber on the spool.
Fully compliant with IEC 60793-1-30 standards, the OFC 37 demonstrates Nextrom’s continued commitment to delivering solutions that combine speed, efficiency, and future-ready design in one compact system.
world´s fastest
OFC 37 proof tester process speed 3500 m/min. Structural design is future-proofed for higher speeds up to 4000 m/min
side-by-side layout
cleanroom space-saving side-by-side layout. Front & back maintenance access, ensuring easy operation and service.
Nextrom’s 1000 km reel technology
enabling direct proof testing from draw spools into 50 km delivery spools for maximum efficiency
video
recap
- World’s fastest optical fiber proof tester – 3500 m/min
- Utilizing Nextrom’s 1000 km reel technology
- Cleanroom space-saving side-by-side layout
- Front & back maintenance access
- Flange detection system minimizes rewinding
- Reel recipe free operation ensures seamless changeovers
- Quiet, vibration-free process for stable, reliable performance
- Future-proofed for higher speeds up to 4,000 m/min
- Fast stop system with whipping protection for fiber on the spool
- Complies with IEC 60793-1-30 standards
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