Parallelly connected multiplex optical fiber sensor of SMS type

The utility model discloses a parallelly connected multiplex optical fiber sensor of SMS type, it is connected the parallelly connected structure of formation with fiber coupler respectively with the fibre optic interferometer of different " single mode - multimode - single mode " the syllogic structures of many multimode fiber length, utilizes multiplex's characteristic, can measure simultaneously like temperature, stress etc. A plurality of physical parameter. The utility model discloses the preparation is simple, and is with low costs, and can carry out the simultaneous measurement at the non -interfering on the premise of to a plurality of parameters.