Electrode arrangement for lensing

Details Electrode arrangement for lensing Electrode arrangement for lensing

B - Operations, Transporting

29

D

18/104

B29D 11/00 (2006.01) G02B 1/04 (2006.01) G02B 6/255 (2006.01) G02B 6/26 (2006.01) G02B 6/32 (2006.01)

Patent

CA 1295445

K. M. Clark 2-1 ELECTRODE ARRANGEMENT FOR LENSING ABSTRACT OF THE DISCLOSURE A system is provided for positioning a pair of electrodes on either side of the end portion of an optical fiber extending through a contact, to establish an arc through a cross-aperture in the contact and across the fiber to melt the fiber into a lens, which assures close control of the arc and which prolongs the life of the electrodes. The tips of the electrodes are positioned to lie slightly within opposite ends of the cross-aperture, to avoid establishing an arc between the electrodes which passes around the contact instead of through the cross-aperture. The electrodes are spaced apart by at least about eight times the diameter of the optic fiber, to avoid deposition of vapors from the heated optic fiber onto the electrodes. The cross-aperture extends to the tip of the contact, so the contact can be moved along its axis to a position where the electrodes lie on opposite sides of the fiber end portion.

555833

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