The Application of Pseudo-Random Sequence in the Properties Measurement of Polymer Optical Fiber
A new method for the properties measurement of polymer optical fiber (POF) using pseudo-random sequence is introduced.The light source modulated by pseudo-random sequence is injected into the POF.The output optical signal after photoelectric conversion is made the correlation detection with pseudo-random sequence,and finally the correlation operation is carried out based on Labview software.Because pseudo-random sequence performs well on randomicity and it has the correlation properties similar to that of white noise,interference and noise have little influence on the peak of correlation function during the measurement,and the signal-to-noise ratio (SNR) of the output signal can be improved obviously.The measuring method is studied both theoretically and experimentally.Experimental results show that the SNR of the output signal can be improved by 25~40dB for the signal with SNR-15dB to 6dB,and the measuring precision is improved by this method.
Pseudo-random sequence Polymer optical fiber Correlation detection Labview
Yanchun Wang Changwei Sun
Department of Mechanical and Electronic Engineering,Bengbu College,Bengbu 233030,China
国际会议
济南
英文
653-657
2012-12-29（万方平台首次上网日期，不代表论文的发表时间）