Optical fiber circumferentialy symmetric fusion splicing and pro

Details Optical fiber circumferentialy symmetric fusion splicing and pro Optical fiber circumferentialy symmetric fusion splicing and pro

1991-03-18

1992-11-03

Lee, John D.

Optical waveguides

With splice

Fusion splicing

21912163, 21912178, 21912182, 385 98, G02B 626

Patent

active

051612070

ABSTRACT:
Two optical fiber segments are spliced in an end-to-end fashion by first axially aligning the optical fiber segments, and then fusing the optical fiber segments with a converging conical light beam convergently focused to an apex region along the optical fiber. The converging conical beam heats the optical fiber segments and the splice in a circumferentially uniform manner. The apex region at which the converging conical beam is focused can be moved progressively along the length of the optical fiber to effect the fusion, and also to directionally fire polish and stress relieve the optical fiber to minimize the presence of flaws in the optical fiber after fusion is complete. The converging conical light beam is achieved by creating a diverging conical beam using movable mirrors to deflect a collimated beam into a diverging conical beam. The diverging conical beam is reflected from a parabolic mirror to form the converging conical beam that is focused toward the optical fiber. Longitudinal movement of the apex region along the optical fiber is achieved by altering the amplitude of the movement of the mirrors to change the apex angle of the diverging conical light beam.

REFERENCES:
patent: 4263495 (1981-04-01), Fujita et al.
patent: 4802729 (1989-02-01), Rivoallan et al.
patent: 4978201 (1990-12-01), Yamada et al.
patent: 5013345 (1991-05-01), Itoh et al.
patent: 5016971 (1991-05-01), Hsu et al.

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