Patent ID: 6597850
Filing Date: 2003-07-22
Classification: G02B

Abstract:
An optical fiber comprising a light-guiding portion and a peripheral portion around its light-guiding portion, the peripheral portion being constituted by at least one protective covering, the optical fiber including, in a covering outside its light-guiding portion, at least one crystalline intermetallic compound made up of at least two metals, the compound having a plateau pressure during hydride formation that is less than equal to 5Ã—10âˆ’2 atm (where 1 atm=1.013Ã—105 Pa) measured by a PCT (pressure composition temperature) method and of the form ABxMy where:A is constituted by at least one element from columns IIa, IIIb, or IVb of the periodic classification of the elements (CAS version); B is constituted by at least one element from columns Vb, VIII, or IIIa of the periodic classification of the elements (CAS version); M contains at least one element from columns VIb, VIIb, Ib, or IIb of the periodic classification of the elements (CAS version); with:0&lE;x&lE;10; 0&lE;y&lE;3 if A contains elements from column IIa only; and 0.2&lE;y&lE;3 if A contains at least one element from columns IIIb or IVb.