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Detrimental effect of self-phase modulation on the performance of Brillouin distributed fiber sensors  
Description:
We propose and experimentally demonstrate a new method to extend the range of Brillouin optical time domain analysis (BOTDA) systems. It exploits the virtual transparency created by second-order Raman pumping in optical fibers. The idea is theoretically analyzed and experimentally demonstrated in a 50 km fiber. By working close to transparency, we also show that the measurement length of the BOTDA can be increased up to 100 km with 2 meter resolution. We envisage extensions of this technique to measurement lengths well beyond this value, as long as the issue of relative intensity noise (RIN) of the primary Raman pump can be avoided. 

Publication year:    2011
Reference:    Stella M. Foaleng, Félix Rodríguez-Barrios, Sonia Martín-López, Miguel Gonzalez-Herraez, Luc Thevenaz, "Detrimental effect of self-phase modulation on the performance of Brillouin distributed fiber sensors”, Optics Letters 36, 97-99, (2011)
Magazine:    Optics Letters
Running:    No.
 
Investigación financiada por el Ministerio de Ciencia e Innovación y la Agencia Estatal de Investigación
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