Fiber-optic pressure transducer with temperature compensation.

摘要

Transducer characterised in that it comprises two coils of optical fibres (1) and (3) each formed on a cylinder (2) and (4) so as to keep at the output the same state of polarisation and the same length, the cylinders (2) and (4) constituting one and the same mechanical part (5), and in that the assembly is enclosed within a measurement cell (6) where the pressure to be measured prevails and is utilised for interferometric measurements using coherent light. This invention is of interest to pressure-transducer manufacturers. <IMAGE>