Sterlite Technologies Launches World’s Slimmest IBR Cable in the US
Sterlite Technologies Inc., a US-based subsidiary of Sterlite Technologies Ltd. (STL), has launched an optical fiber cable described as the world’s slimmest by the company, for use by hyperscale data center operators and telecom service providers in the United States. This information was shared by Sterlite Technologies in its stock filing dated 4th September 2025.
The newly introduced Celesta Intermittent Bonded Ribbon (IBR) cable contains 864 fibers within an overall diameter of 11.7 mm and is designed for jetting* in ducts with an inner diameter of 14 mm. The cable uses STL’s bend-insensitive** HD G.657.A2 200-micron fiber with standard sheathing. This newly launched cable meets United States’ ICEA 122-744 standard for optical microfibre duct cables, is compliant with Telcordia’s GR-20 standard.
Commenting on this development, Dr. Badri Gomatam, CTO, STL, said, “Our breakthrough Celesta IBR cable is a testament to STL’s commitment to advanced engineering and customer-centric innovation”.
*Jetting refers to the process of inserting Optical Fibre Cables into pre-installed small-diameter ducts (or microducts). To do this, a combination of high-speed compressed air and mechanical pushing is employed.
**Bend-insensitive optical fibres are constructed with an additional layer of low reafractive index around the fibre core, thus minimising losses in case the fibre is bent during laying.
