Detrimental effect of self-phase modulation on the performance of Brillouin distributed fibre sensors
Authors
Foaleng Mafang, S.; Rodríguez Barrios, Félix; Martín López, Sonia; González Herráez, Miguel; Thévenaz, LucIdentifiers
Permanent link (URI): http://hdl.handle.net/10017/28757DOI: 10.1364/OL.36.000097
ISSN: 0146-9592
Publisher
Optical Society of America
Date
2011-01-15Bibliographic citation
Foaleng, S.M., Rodríguez-Barrios, F., Martin-Lopez, S., González-Herráez, M., Thévenaz, L., 2011, " Detrimental effect of self-phase modulation on the performance of Brillouin distributed fiber sensors", Optics Letters, 36 ,issue 2, pp. 97-99.
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/acceptedVersion
Access rights
info:eu-repo/semantics/openAccess
Abstract
We show that the spectral broadening of the pump pulse through self-phase modulation in a time-domain distributed Brillouin sensor has a considerably detrimental effect in the measurement, especially in the case of long distances and high-resolution pulses. Using 30 ns pump pulses with peak power of 276 mW, self-phase modulation leads to a doubling of the effective gain linewidth after some 20 km, which is equivalent to a contrast loss of 2 dB in the measurement. The impact is higher for shorter pulses (higher resolution). The theoretical modeling is fully confirmed by experimental results.
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