METHOD OF FIXING A FIBRE-OPTIC COMPONENT IN AN OPTICAL DEVICE, THE OPTICAL DEVICE SO OBTAINED AND THE POLYMER COMPOSITION USED THEREIN

摘要

An optical device is described comprising at least one fibre-optic component arranged inside the said device and a particular polymer composition capable of holding the said optical components in a predetermined position and protecting them inside the said device. The polymer composition is a silicon e elastomer obtained by crosslinking a mixture comprising at least one polysiloxane containing two or more hydrogen-siloxane functional groups of formula >SiH-O- at least one polysiloxane containing at least two vinyl g roups of formula -CH=CH2, where the said polysiloxanes are reacted in an amount su ch that the molar ratio between the hydrogen-siloxane groups and the vinyl grou ps is less than or equal to 1:1. The said polymer composition has extremely low emission of hydrogen, less than 1 cm3 per kg of composition.