A world-leading chalcogenide research and manufacturing team

Industrial partnerships, samples, new and non-toxic compositions of this revolutionary material

GLS-Se extruded optical fibre

Extruding chalcogenide glass for optical fibre

Core-clad GLS-Se optical fibre
Core-clad GLS-Se optical fibre from extruded preform*

ChAMP has demonstrated for the first time fabrication of a core-clad GLS-Se glass-based optical fibre using extrusion. For initial demonstration two glass compositions similar in thermal and mechanical characteristics were chosen, with only a 5wt% difference of Ga2Se3 between core and cladding. Billets of 30mm in diameter and different thicknesses were fabricated using established and repeatable melt quenching process in our facilities

Sellmeier Coefficients for GLS glass


In response to many requests from optical designers and using the latest visible to infrared index data for GLS glass we are pleased to release the full Sellmeier coefficients for GLS. Use of the following coefficient enables the refractive properties of GLS lenses to be modelled in most common lens design programs.

Anti-reflection coatings

In partnership with Artemis Optical,  anti-reflection coating of GLS chalcogenide glass has been demonstrated.  This reduces reflections from GLS glass surfaces to <1%, significantly lower than the ~28% reflection from the uncoated glass that is a result of its high refractive index. with Testing of the coated optics, shows them passing industrial standard adhesion, abrasion…

On-chip photonic synapse

A new paper published 27 September 2017 by ChAMP partners from Oxford and Exeter continues the search for new “neuromorphic computing” architectures that mimic the brain’s approach to simultaneous processing and storage of information is intense.