Fiber-optic coupler comprising intertwined monomode fibers of di

Details Fiber-optic coupler comprising intertwined monomode fibers of di Fiber-optic coupler comprising intertwined monomode fibers of di

1987-02-20

1988-10-04

Lee, John D.

G02B 626

Patent

active

047752092

ABSTRACT:
A coupler (FIG. 4) comprising a pair of interwined monomode fibers optically coupled along a portion of their length. The diameter of one fiber is significantly smaller than that of the other and this fiber is thus wound helically. A helical pitch not exceeding 10 mm is chosen. For such pitch, the smaller diameter fiber is appreciably longer. The following inequality thus holds:

REFERENCES:
patent: 4550974 (1985-11-01), Murphy
patent: 4647146 (1987-03-01), Karr, III et al.
patent: 4726643 (1988-02-01), Imato et al.

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