.Optical-fiber distributed temperature sensor: design and realization[J].Optoelectronics Letters,2008,4(6):415-418 Optical-fiber distributed temperature sensor: design and realization Abstract:       Through analyzing theoretically the temperature effect of the optical-fiber Raman backscattering, a distributed temperaturesensor is designed based on the single-mode fiber. Demodulation methods of temperature transduction are compared, andthen the demodulation method using the ratio of the anti-Stokes and the Stokes Raman backscattering intensity is adopted.Both the hardware composition and the software realization of the system are introduced in detail.The experiment showsthat the distinguishing ability of the temperature and that of the space are 1℃ and 2 m, respectively, and that the systemresponse time is about 180 s with a sensing range of 5 km and with a temperature measurement range of 0-100℃. Hits: 3607 Download times: 180 View Full Text    Download reader