Method and apparatus optoelectronic measuring Brillouin

Method optoelectronic measuring Brillouin, comprising the step of providing a signal (s1) into an optical fiber (100), said signal (s1) encoded time-frequency, said encoded time-frequency (s1) signal one optical pumping signal comprising a sequence of code words, each code word comprising at least two pulses, each pulse showing a particular codeword a different frequency.