High-Index Fiber | Specialty Fibers | Corning

Bundle of clear glass fiber up close, multicolored-lighted backdrop

High-Index Fiber

High-Index Fiber

Consistent glass with excellent reliability

Our patented process creates durable fibers that serve many industries

Our Versatile Fibers Serve Many Industries

Corning's suite of high-index fibers are used across telecommunications, aerospace, and industrial markets in applications such as wavelength division multiplexing (WDM) couplers, splitters, and pump pigtails. The high-index fibers are manufactured with Corning's outside vapor deposition (OVD) process which results in highly consistent glass and excellent reliability.


  • HI 780 and HI 780C
  • HI 980 and RC HI 980
  • HI 1060 and RC HI 1060
  • HI 1060 FLEX and RC HI 1060 FLEX


  • Photonic products and fused-fiber couplers
  • Component fiber for erbium-doped fiber amplifiers (EDFAs), couplers, other dense wavelength division multiplexing (DWDM) components
  • Pigtails for pump laser diodes
  • Short wavelength laser and light-emitting diode (LED) sources
  • Splitters and combiners
  • Sensors and gyroscopes
  • CATV couplers
  • Ultra-compact components requiring small bend radii