Telefonaktiebolaget Lm Ericsson (publ)

Anne Ingrid Lidgard

Leif G Stensland

Walter Margulis

K A Berg

Enhancing the nonlinearity of an optical waveguide

An optical fiber intended to be used as a sensor is of the kind suitable for communication and has a longitudinal cavity or hole which can be intentionally closed or has a more narrow shape at definite positions in the longitudinal direction of the fiber. The cavity, the diameter of which can be of the magnitude of order of 5 .mu.m-50 .mu.m, is filled with a material changing its volume depending on physical quantities in the fiber environment. The hole can be closed or made narrower at different positions in the longitudinal direction of the fiber for instance by locally heating the fiber by a pulsed laser beam.

Growing community of inventors

Stockholm, Sweden

Anne Ingrid Lidgard