Time-division-multiplexing(TDM)　demodulation　technique　of　Fiber　Bragg　Grating(FBG)　sensor　arrays　based　on　a　tunable　pulsed　laser　is　studied.　A　tunable　fiber　laser　based　on　a　matched　FBG　is　applied,　and　the　wavelengths　of　the　sensing　FBGs　are　obtained　by　determining　the　maximum　voltages　by　using　a　photodiode.　The　advantages　of　this　scheme　include　simple　structure,　high　signal-to-noise　ratio,　and　the　sensing　signals　are　obtained　by　determining　the　maximum　voltages.