The performance of a recently proposed scheme for long-range distributed temperature and strain fiber sensing, based on stimulated Brillouin scattering and assisted by bidirectional first order stimulated Raman scattering, is analysed. System operation and optimal design parameters are studied numerically, demonstrating the possibility of developing fiber sensors based on the proposed configuration with enhanced resolution and operating lengths of up to 100 km. Signal power excursion along the fiber and optimal pumping configurations for the system are studied in detail numerically, and the benefits of the proposed approach illustrated with an experimental example. Future improvements such as the possible use of higher-order pumping schemes are discussed.

4 páginas, 5 figuras, 1 tabla.-- Comunicación oral presentada 25º Symposium Nacional de la Unión Científica Internacional de Radio celebrado en España en Septiembre de 2010.

Peer reviewed