Abstract
The performance of mode-locked erbium-doped fiber lasers in optical sensor networks is analyzed and compared with the results obtained by using commercial erbium-doped fiber amplifiers as source. Passive mode-locked lasers developed are based on nonlinear polarization rotation and they have been built using the same erbium-doped fiber amplifiers. To simulate a real sensor network, a tree structure with four fiber Bragg gratings was built employing 50/50 couplers. The mode-locked laser developed offers a reasonably good behavior at a very wide spectral range (83nm, approximately) over C and L bands. The signal to noise ratio and the peak power are greatly improved with regard to the values obtained employing commercial amplifiers as source.
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