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TITLE: Comparison of the use of first and second-order Raman amplification to assist a phase-sensitive optical time domain reflectometer in distributed vibration sensing over 125 km
AUTHORS: Martins, HF ; Martin Lopez, S; Filograno, ML; Corredera, P; Frazao, O ; Gonzalez Herraez, M;
PUBLISHED: 2014, SOURCE: 23rd International Conference on Optical Fibre Sensors in 23RD INTERNATIONAL CONFERENCE ON OPTICAL FIBRE SENSORS, VOLUME: 9157
INDEXED IN: Scopus WOS CrossRef: 3
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TITLE: High visibility phase-sensitive optical time domain reflectometer for distributed sensing of ultrasonic waves
AUTHORS: Hugo F Martins; Sonia Martin Lopez; Pedro Corredera; Massimo L Filograno; Orlando Frazao ; Miguel Gonzalez Herraez;
PUBLISHED: 2013, SOURCE: 5th European Workshop on Optical Fibre Sensors in FIFTH EUROPEAN WORKSHOP ON OPTICAL FIBRE SENSORS, VOLUME: 8794
INDEXED IN: Scopus WOS CrossRef: 6