Optical fiber and fibre-optic cable comprising at least one intermetallic element that absorbs hydrogen
First Claim
1. 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 5×
- 10−
2 atm (where 1 atm=1.013×
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≦
x≦
10;
0≦
y≦
3 if A contains elements from column IIa only; and
0.2≦
y≦
3 if A contains at least one element from columns IIIb or IVb.
1 Assignment
0 Petitions
Accused Products
Abstract
In a covering outside its light-guiding portion, an optical fiber includes 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 5×10−2 atm (where 1 atm=1.013×105 Pa) as measured at 30° C. by a PCT method, the compound being 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 said classification, and M contains at least one element from columns VIb, VIIb, Ib, or IIb of said classification, where:
0≦x≦10,
0≦y≦3 if A contains elements from column IIa only, and
0.2≦y≦3 if A contains at least one element from columns IIIb or IVb.
The optical fiber cable is characterized in that it includes such a crystalline intermetallic compound.
24 Citations
18 Claims
-
1. 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 5×
- 10−
2 atm (where 1 atm=1.013×
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≦
x≦
10;
0≦
y≦
3 if A contains elements from column IIa only; and
0.2≦
y≦
3 if A contains at least one element from columns IIIb or IVb.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- 10−
-
9. An optical fiber cable having at least one optical fiber, the cable including at least one crystalline intermetallic compound formed by at least two metals, having a plateau pressure during hydride formation that is less than or equal to 5×
- 10−
2 atm measured at 30°
C. by a PCT method, the compound being 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≦
x≦
10;
0≦
y≦
3 if A contains elements from column IIa only; and
0.2≦
y≦
3 if A contains at least one element from columns IIIb or IVb.- View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
- 10−
Specification