OVERLOAD PROTECTIVE MECHANISM FOR FIBER-OPTIC MICRO-BEND SENSOR

摘要

The jaw arrangement comprises a pair of jaws each having facing corrugated surfaces for holding an optical fibre between them and being movable with respect to each other for bending the optical fibre to modulate light passing through the fibre. Each corrugated surface comprises a number of flat areas lying in a common plane in a direction perpendicular to the relative movement direction for the jaws. Also a number of projections extend in the direction of relative movement of the jaws. The projections alternate with the flat areas. Projections of one of the jaws are positioned over flat areas of the other jaws to bend the optical fibre between them. The jaws are movable together under an overload condition whereby the optical fibre is bent by projections of one jaw against flat areas of the other jaw.