Low loss directional coupling for optical fibres

Details Low loss directional coupling for optical fibres Low loss directional coupling for optical fibres

1978-04-10

1979-08-21

Levy, Stewart J.

G02B 514

Patent

active

041651502

ABSTRACT:
Low loss directional coupling of optical fibres is obtained by wrapping a tap fibre round a trunk fibre. Any cladding is first removed and then the tap fibre wrapped round the trunk fibre. The tap ratio can be varied by a variation in the number of turns or twists of the tap fibre around the trunk fibre. Signals can be abstracted by the tap fibre and also inserted.

REFERENCES:
patent: 4054366 (1977-10-01), Barnoski et al.
patent: 4087156 (1978-05-01), Kao et al.
Ozeki et al. articles "Optical Directional Coupler Using Tapered Sections in Multimode Fibers" in Applied Phys. Letts. vol. 28, No. 9, May 1976, pp. 528-529.

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