Experimental Studies and Modelling of Optical Fibre Sensors and Their Application in the Measurement of Microwave Power

Abstract
The changes in the optical propagation coefficient induced in optical fibres, when under the influence of microwave radiation, can provide a basis for the measurement or monitoring of microwave power, the interaction being thermal in nature. The following are discussed - measurements on the enhancing effect of applying various secondary coatings to the fibre, modelling of the induced temperature distribution and hence optical response of coated single-mode fibre, operation of a prototype flat-panel health monitor for microwaves.