Adhesive Applications in Fibre Optics

To secure fibre-optic cables, fibre arrays and waveguides, Panacol has developed special adhesives that can allow an unimpeded transmission of light at optical interfaces. To maintain their light transmission properties, they do not yellow or otherwise change in colour with age. These adhesives do not readily absorb moisture and feature a high glass transition (Tg) point and low thermal expansion.

To allow fast curing after adjustment of the fibreglass cables, these adhesives are usually UV-curing, allowing small bonding surfaces to be set and cured within seconds.

The table below lists a selection of adhesives that are suitable for joining, reinforcing and sealing fibre cables, fibre-chip interfaces and fibre arrays. Further products and custom solutions are available on request.

Cement/Adhesive Application Viscosity [mPas] Base Curing*
Vitralit® 1527 potting of fibreglass bundles 750-1250 epoxy UV
Structalit® 701 potting of fibreglass bundles 3,000-5,000 2 component epoxy thermal
Vitralit® 4731 VT fibre-chip bonding 22,000-28,000 acrylate UV

*UV = 320 - 390 nm          VIS = 405 nm