Optical fibre incorporating a variable internal Bragg grating an

Details Optical fibre incorporating a variable internal Bragg grating an Optical fibre incorporating a variable internal Bragg grating an

1992-03-24

1993-06-08

Lee, John D.

Optical waveguides

Directional optical modulation within an optical waveguide

385 37, G02B 616

Patent

active

052186512

ABSTRACT:
Optical fibre device having a core and coaxial sheath. The core and coaxial sheath provides a light amplifier when optically pumped. Interfering optical waves incident to the fiber having a predetermined intensity and wavelength inscribe an ephemeral periodic index strata grating over at least part of the fiber core when the core is illuminated. In the absence of illumination by interfering waves, the grating disappears.

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