Summary:
Sterlite Technologies’ U.S. subsidiary has developed the world’s slimmest high-density optical fiber cable, designed to meet the massive data needs of hyperscalers, telecom operators, and data centers. The new Celesta Intermittent Bonded Ribbon (IBR) Cable packs 864 fibers into a slim 11.7 mm diameter, setting new benchmarks in speed, capacity, and installation efficiency.
Breakthrough in Fiber Density
Sterlite Technologies Inc. (STI), the U.S. subsidiary of Sterlite Technologies Ltd. [NSE: STLTECH], has launched the Celesta IBR Cable, a product designed specifically for hyperscalers and data center operators in the U.S. The cable packs 864 fibers in just 11.7 mm diameter, optimized for installation in 14 mm ducts.
During testing, the cable achieved a record jetting distance of 1,500+ meters (approx. 4,700 ft) in under 20 minutes, making it one of the most efficient optical fiber solutions in its class. It uses bend-insensitive HD G.657.A2 200-micron fiber, ensuring durability and superior installation performance.
Meeting Hyperscaler Demands
The surge in cloud adoption and distributed data centers has created demand for high-capacity, low-latency networks. STL’s innovation addresses this by combining:
- Ultra-high fiber density to maximize duct usage.
- Faster installation times with mass fusion splicing.
- Reliability under varied environmental and operational conditions.
The cable is suited for data center interconnections, cabinet equipment links, and outside plant deployments—all of which require dense fiber packing without compromising performance.
Standards and Applications
The Celesta IBR Cable complies with ICEA 122-744 and GR-20 standards and can be deployed in 14/18 mm micro subducts. It has also been tested under IEC-compliant configurations, ensuring global acceptance and reliability.
Global Expansion and Legacy
STL’s IBR cable range extends from 12F to 6912F, making it one of the most comprehensive portfolios in the industry. Over the past five years, the company has supplied more than 10 million fiber kilometers (fkm) to clients across Europe and the U.S.
With 10 manufacturing facilities spread across North America, Europe, and Asia, STL is strategically placed to serve diverse markets. Notably, it was the first company to introduce IBR technology in India, strengthening its position as a global fiber optics leader.
Leadership Comment
Dr. Badri Gomatam, CTO of STL, emphasized that the new cable reflects STL’s commitment to advanced engineering and customer-focused innovation. He said,
“By delivering industry-leading fiber density and bend performance in a remarkably slim design, we’re enabling hyperscalers and data centers to scale efficiently and sustainably—building the foundation for next-generation digital infrastructure.”
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