Method for the manufacture of wires stretched according to a predetermined profile
First Claim
1. A method for the controlled stretching of one or more optic fibers as the fibers flow through a heating chamber, comprising the following steps:
- dictating a speed Ve =dxe /dt of flow of the fiber entering the heating chamber,choosing a relationship f of variation of the diameter Ds of the fiber such that Ds =f(xs) in which xs represents the positions, variable in time, of a point on the fiber during exit from the heating chamber,carrying out successive stretching operations on the fiber to modify, during each said stretching operation, the diameter Ds of the fiber during exit from the heating chamber so as to follow the profile defined by the relationship f of variation.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for the controlled stretching of one or more optical fibers according to a desired profile and a device for its implementation. The method includes several steps. In these steps, a speed Ve =dxe /dt of flow of the fiber entering the heating chamber is laid down, a relationship f of variation of the diameter Ds of the fiber during exit from the heating chamber is chosen such that Ds =f(xs) wherein xs represents the positions, variable in time, of a point on the fiber during exit from the heating chamber, successive stretching operations are performed on the fiber to modify, each time, the diameter Ds of the fiber during exit from the heating chamber, so as to follow the profile defined by the relationship f of variation. The method has application to the making of optic fiber devices.
7 Citations
12 Claims
-
1. A method for the controlled stretching of one or more optic fibers as the fibers flow through a heating chamber, comprising the following steps:
-
dictating a speed Ve =dxe /dt of flow of the fiber entering the heating chamber, choosing a relationship f of variation of the diameter Ds of the fiber such that Ds =f(xs) in which xs represents the positions, variable in time, of a point on the fiber during exit from the heating chamber, carrying out successive stretching operations on the fiber to modify, during each said stretching operation, the diameter Ds of the fiber during exit from the heating chamber so as to follow the profile defined by the relationship f of variation. - View Dependent Claims (5, 6, 7, 8)
-
-
2. A method for the controlled stretching of one or more optic fibers comprising the following steps:
-
dictating a speed Ve =dxe /dt of flow of the fiber entering the heating chamber, choosing a relationship f of variation of the diameter Ds of the fiber such that Ds =f(xs) in which xs represents the positions, variable in time, of a point on the fiber during exit from the heating chamber, carrying out successive stretching operations on the fiber to modify, during each said stretching operation, the diameter Ds of the fiber during exit from the heating chamber so as to follow the profile defined by the relationship f of variation, wherein, to perform the successive stretching operations on the fiber so as to modify, during each said stretching operation, the diameter Ds of the fiber and follow the profile defined by the relationship f of variation, a first value of the diameter Ds of the fiber during exit from the heating chamber is determined, on the basis of the relationship f, as a function of the position xs of the point on the fiber during exit from the heating chamber, a shift dxs in position xs of the point on the fiber is determined to obtain a stretching of the fiber during exit from the heating chamber corresponding to the first value, on the basis of the value of the speed dxs of flow of the fiber at entry into the heating chamber and of the previously computed value of the diameter Ds, a new position xs of the point on the fiber during exit from the heating chamber is determined by increasing the value of the previously computed shift dxs, the operations up to the obtaining of the desired profile are reiterated. - View Dependent Claims (3, 4)
-
-
9. A device for the controlled stretching of one or more optic fibers, said device comprising:
- a heating assembly, means for shifting the fiber, a first computer controlling the means for shifting, and a second computer, wherein said first computer servo-controls the position of the means for shifting on the basis of data elements given by the second computer, the second computer including a means for dictating a speed Ve =dxe /dt of flow of the fiber entering the heating assembly, means for choosing a relationship f of variation of the diameter Ds of the fiber such that Ds =f(xs) in which xs represents the positions, variable in time, of a point on the fiber during exit from the heating assembly and means for carrying out successive stretching operations on the fiber to modify, during each said stretching operation, the diameter Ds of the fiber during exit from the heating assembly so as to follow the profile defined by the relationship f of variation.
- View Dependent Claims (10, 11, 12)
Specification