Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Optical fiber – waveguide – or preform
Patent
1995-11-28
1998-01-13
Vargot, Mathieu D.
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Optical fiber, waveguide, or preform
65435, 65475, B29D 1100
Patent
active
057075646
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 V.sub.e =dx.sub.e /dt of flow of the fiber entering the heating chamber is laid down, a relationship f of variation of the diameter D.sub.s of the fiber during exit from the heating chamber is chosen such that D.sub.s =f(x.sub.s) wherein x.sub.s 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 D.sub.s 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.
REFERENCES:
patent: 4765816 (1988-08-01), Bjornlie et al.
R.P. Kenny et al., Control of Optical Fibre Taper Shape, Electronics Letters, vol. 27, No. 18, Aug. 1991.
France Telecom
Vargot Mathieu D.
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