Method for adjusting two ends of two optical fibers to be connec

Details Method for adjusting two ends of two optical fibers to be connec Method for adjusting two ends of two optical fibers to be connec

1982-01-12

1985-10-22

Punter, William H.

Optics: measuring and testing

For optical fiber or waveguide inspection

G01N 2100

Patent

active

045484945

ABSTRACT:
A method for adjusting the position of two ends of a pair of aligned optical fibers during formation of a connection or a splice between the two ends either to repair a break in a fiber or to add another fiber characterized by coupling a light pulse into a free end of one of the pair of fibers, measuring the intensity of a back-scattering of the light pulse received at the free end, determining an abrupt change in the intensity of the back-scattered light at the free end corresponding to the point of the connection to be made for the pair of fibers, and adjusting the position of the two ends of the pair of fibers to decrease the amount of the abrupt change in the intensity being determined to the smallest determined value. When the smallest amount of the abrupt change is obtained, the ends of the pair of fibers are in their best axial alignment for forming a connection with the lowest possible attenuation and the process for connecting or splicing the fibers together can be initiated or continued to completion.

REFERENCES:
patent: 3938895 (1976-02-01), Bridger et al.
patent: 4021121 (1977-05-01), Schicketanz
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Kohanzadeh, Y., "Hot Splices of Optical Waveguide Fibers", App. Optics, 3-1976, pp. 793-795.
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