Optical fiber tap

Details Optical fiber tap Optical fiber tap

1977-05-17

1979-01-23

Corbin, John K.

G02B 514

Patent

active

041357809

ABSTRACT:
An optical fiber tap for tapping optical energy from an optical fiber includes an optical waveguide positioned adjacent to the fiber for collecting light signals therefrom. The optical waveguide preferably has an index of refraction greater than the index of refraction of the fiber. A coupling material interconnects the fiber and the optical waveguide for conducting light from the fiber into the waveguide, the coupling material preferably having an index of refraction between the indexes of the waveguide and the fiber. A photodetector is coupled to one end of the waveguide for receiving light signals therefrom and converting the light signals to corresponding electrical signals. When the tap is used to remove light from the cladding of an optical fiber, pressure is applied to preselected points on the fiber upstream of the tap to couple optical signals from the fiber core into the fiber cladding. When the tap is used to remove light from the core of an optical fiber from which the cladding has been removed, optical signals are collected directly from the fiber core and no pressure assembly is required.

REFERENCES:
patent: 3777149 (1973-12-01), Marcatili
patent: 3923377 (1975-12-01), Milton
patent: 3931518 (1976-01-01), Miller
patent: 3936631 (1976-02-01), Muska
patent: 4008061 (1977-02-01), Ramsay
patent: 4054366 (1977-10-01), Barnoski et al.
patent: 4076375 (1978-02-01), Muska et al.

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