Method and a device for the manufacturing of an optical coupler

Details Method and a device for the manufacturing of an optical coupler Method and a device for the manufacturing of an optical coupler

1988-10-14

1990-03-06

Paschall, M. H.

Electric heating

Metal heating

By arc

21912145, 21912159, 350 962, 350 9621, B23K 900

Patent

active

049068105

ABSTRACT:
The invention relates to a method for the manufacture of optical couplers, comprising the steps of (a) removing the jacket material over a short distance from two or more optical fibres, (b) bringing the jacketless portions of the optical fibers in contact with each other, (c) fusing the optical fibers together within the contact area and drawing them into tapers. In order that the process would be simpler and easier to control, the method according to the invention is characterized in that the optical fibers are fused by heating them by means of an arc substantially parallel to the optical fibers. The arc is excited in a chamber confined in the direction of the radius of the fibers, and it is excited and extinguished at a low frequency so that the arc strikes at arbitrarily varying points around the fibers. The invention also concerns an oven for fusing fibers, comprising a fusion chamber extending through a ceramic body and provided at both ends thereof with an electric electrode for producing within the chamber an arc parallel to optical fibers arranged to be led through the chamber to be fused together.

REFERENCES:
patent: 3810802 (1974-05-01), Bubite et al.
patent: 4049414 (1977-09-01), Smith
patent: 4274707 (1981-06-01), Pacey et al.
patent: 4383844 (1983-05-01), Kashima et al.
patent: 4598974 (1986-07-01), Munn et al.
patent: 4664732 (1987-05-01), Campbell et al.
patent: 4666234 (1987-05-01), Emkey
patent: 4727237 (1988-02-01), Schantz

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