Implementation Of Algorithms Used In Optical Fiber Raman Sensor

Optical fiber has many advantages such as low cost,low loss,small volume,broad frequency band and so on. Meanwhile,light wave has the characteristic of independent transfer without influence on each other and will suffer little influence from the electromagnetic radiation,because it is also electromagnetic wave. In addition,light wave can transfer more information because of its higher frequency. From what has been discussed above, Optical fiber communication technology has developed quickly and nearly matures now,which makes a great contribution to the development of photoelectric conversion and electro-optical conversion technology. The sensor can work in bad environment and has high stability.For those merits above,optical fiber sensor technology gains swift development. It is applied to the measurement of temperature,displacement,current,pressure and so on,involved in our daily life, national defense and national economic.This paper mainly researched the algorithms of optical fiber roman sensor based on optical time domain reflectometry(OTDR). It was arranged as follows:First,there was some knowledge about optical fiber sensor; Second,it introduced the basic principle of optical fiber roman scattering and the whole architecture of the optical fiber roman temperature sensor system,for example,OTDR used in single-mode fiber, Gray complementary sequence, biorthogonal codes and generalized inverses;Finally,this system’s partial hardware platform and software UI were given.In the optical fiber roman sensor system, optical fiber is not only the transfer medium but also the sensor medium. For some difficulties in the research process,this paper also put forward the method to solve problems and improve the performance.